Calendar 3U / 4U


Course Calendar

Welcome to the new users. This is where you may find your new links and information needed for this sem.

Wait for your new links and assignments as they become available.

One important link you may want to check out is your course calendar.

Course Calendar SCH3U

That is all for now.

Have fun in the mean time………

50 Responses to Calendar 3U / 4U

  1. The article, called “Martian Gullies Show Traces of Flowing Water within the Past Decade” is about Mars and the ongoing research which NASA has done about the “presumed” bodies of water found on Mars. The article talks about how there has been a new discovery in terms of these water bodies; gullies to be more specific. Researchers have discovered two pathways flowing downwards while passsing around obstacles in a similar way to that of a water body. They believe that these gullies may have been carved out by the actively flowing water. While using the Mars Orbital Camera (MOC), the researchers and their colleagues made two new discoveries; one on December of 2001 and one on February of 2004. When the light of the sun shone onto the craters created by the flowing waters, it created different lights that were later found to be remains and deposits of different colours. The discovery made in February of 2004 showed the beginning of the second deposit. They believe that although the water would have frozen over and evaporated by the cold temperature of the planet alongside its thin atmosphere, the water body could have lasted long enough to create the deep gullies in the planet’s surface. They think that what’s actually happening is that ice is forming in the rock and it is acting as a dam. Then water builds up behind the dam made by the ice. When the pressure exerted by the water buildign up behing the dam is high eneough it breaks through the dam, releasing a lot of the debris and water that was forming the dam. In the future, they hope to find life on Mars and continue their study of the atmosphere and temperature of Mars. They believe that Mars is certainy not a “dead planet”.

  2. The article above is about Martian gullies that suggest that liquid water exists on Mars today. Research regarding this controversial topic has been going on for over seven year now. A recent discovery shows that two new downhill tracks of light-coloured material have formed since the last time it was observed which was in 1999. The tracks are present in long narrow ravines and are filled with water like sediments. These geological features that are created by running water are referred to as “gullies”. The first reported existence of gullies was by Michael Malin and Kenneth Edgett in 2000. Since that discovery, two researches and their colleagues used the Mars Orbital Camera (MOC) to capture pictures of gullies and running water. These NASA researchers discovered two new deposits which had not been seen in the previous images from December 2001. The pictures of the recent deposits show that the light-coloured material remains regardless of the fact that the sun’s light is shinning. Therefore it can be said that this light-coloured material is not a result due to the trick of light or erosion. Other images show the beginning of a second crater which has grown over time. According to NASA researchers, liquid water can stay without freezing long enough to carve gullies. Research has also shown that the water sediments may be a result of flowing ground water or melted ice. Pressure from water that builds up against ice dams breaks through the dam and thus causes a lot of water and sediments to flow which as a result forms a crater. Nevertheless, research is still being conducted to find factors which may contribute to the formation of water on Mars. Researchers want to establish an understanding of the history of Mars so that they can conclude that Mars is not a dead planet after all.

  3. The article “Martian Gullies Show Traces of Flowing Water within the Past Decade”, discusses and explains many of the recent discoveries that confirm the existence of water on planet mars. Over the past seven years, two downhill tracks of light-coloured substances were observed. These two tracks of substances were not noticed in the past images taken before the year 1999. Recent images show that there are narrow ravines within the declining walls of craters containing water like liquid which is able to flow around objects just like water. Gullies which are formed by actively running water, were first reported to exist in the year 2000 by Michael Malin and Kenneth Edgett who are part of the Malin Space Science Systems. Ever since the discovery in 2000, Mars Orbital Camera’s were used by two researchers to capture images of various gullies, trying to look for signs of water. What they did find were two new deposits. The first deposit had not been seen in previous images up until 2005. The image was caught from different perspectives in which the sunlight was shining from different angles. Even then the deposit was seen suggesting that it was not a trick of light or the result of erosion. Similarly, the second deposit was discovered in February 2004, and was seen growing in subsequent images. Even though water would freeze and evaporate, it would flow or be frozen long enough for the water to have formed gullies. What is believed to be happening is that the ice formed within the rock is acting as a dam, and behind it water is built up, which then breaks out when the pressure is high. Other explanations for these deposits such as it being dust or liquid carbon dioxide is not likely the reason as the craters are not dusty and Martian atmospheric pressure would not allow liquid carbon dioxide to stay liquid. It is now believed by researchers that the planet Mars is not a dead planet.

  4. This article is about the possible discovery of water on the surface of Mars. Pictures taken by the Mars Global Surveyor of craters on the surface in 1999 and recently were compared and NASA found that there is a light coloured substance/deposit that seems to be the result of water flowing downhill in gullies in some craters.
    They can say this substance may be water for the following reasons:
    o The tracks branch and flow around obstacles like a liquid or watery sediment would,
    o In different views, the light is coming in at different angles but the light-coloured material remains suggesting its not a trick of the light or erosion,
    o According to NASA, simulations reported last year that flows of water could persist long enough to carve gullies about 500 meters long
    o Other explanations for the deposits such as dust or liquid carbon dioxide are unlikely because the craters are not obviously dusty, and carbon dioxide would not stay liquid at Martian atmospheric pressure.
    NASA’s Mars exploration program’s lead scientist said they have been following the water since mid-’90s and in 2000 Michael Malin and Kenneth Edgett of Malin Space Science Systems in San Diego first reported the existence of gullies in crater slopes which started the speculation of this being a possibility. Michael Malin says that ice formed in the rock is acting as a dam, water builds up behind that ice dam and when the pressure of that water gets high enough, it breaks through the dam and out comes a lot of water and the debris that was forming the dam. Scientists want to find water on Mars because of its connection to life and also to understand the history of the climate on the planet.

  5. Article: “Martian Gullies Show Traces of Flowing Water within the Past Decade”

    Summary:

    Required length: 50 – 100 words
    Actual length: 111 words

    Images taken of two craters on Mars showed two separate deposits apparently flowing down the sides of the interior. When compared to photos taken previously, the deposits were nowhere to be seen.

    Gullies being present on the insides of craters led to the cogitation of the idea that, they were formed by the erosional effects of the coursing of liquid water.

    An argument to counter the existence of water is: the substance is carbon dioxide. A rebuttal is the fact that carbon dioxide would change state (from a liquid) due to the atmospheric pressure of Mars.

    The connection between life and water has fueled the minds of scientists in such cases.

  6. The article from the above link deals with the possibility of water existing on mars today, even with its cold temperatures and thin atmosphere. Images taken of the same Martian crater, one from 2001 and one four years later reveal a change startling to scientists and global surveyors alike. A new, light-coloured deposit has formed within the sloping walls of the Martian crater, perhaps indicating the presence of flowing water. The tracks are present on downward slopes, are branching, and flow around obstacles as if it were water or a liquid sediment. Researchers involved with the Mars exploration have been following the possibility of water since the mid 90s and have now found it. In 2000, members of the Malin Space Science Systems in San Diego were first to report gullies in crater slopes. After that, researches used the Mars Orbital Camera to capture images of these gullies, searching for signs of active water. Images of the deposit were taken at different views, with the sun’s rays coming in at different angles, and the light coloured deposit remained visible, meaning that it was not a trick of the light. According to NASA simulations last year, flows of water would be able to persist long enough to carve 500 metre-long gullies even though liquid water would quickly freeze and evaporate. There was also speculation that flowing ground water or melted ice could have formed gullies as well. They think that what is happening could be the formation of ice, acting as a dam. When water pressure becomes high enough, the water pushes through along with debris. All in all, the mission to mars is to find water, which in turn can influence the existence of life. They must also understand the past, which is indicating that the climate on Mars is undergoing more change than what scientists may have expected. Newer research is continually showing that Mars is not the “dead” planet it may seem to be.

  7. The article,”Martian Gullies Show Traces of Flowing Water within the Past Decade”, discusses the new findings that two researchers, Michael Malin and Kenneth Edgett of Malin Space Science Systems, have observed. Their findings suggest that there is a strong possibility of liquid water existing on Mars. These conclusions are based on their observation of two downhill tracks of material along crater slopes that may have been caused by flowing liquid water. Due to the connection of water to the existence of life, these findings thus suggest that life can be sustained in Mars.

  8. The article simply discusses the possibilities of liquid water’s existance in planet Mars. It is said that deposits of light coloured material flowing down hill in Martian gullies that hadn’t been there in the past seven years(1999) images taken by the Mars Global Surveyor spacecraft is believed to be water due to the flow around obstacles like a liquid or watery sediment, the image from Mars Orbital Camera the light is coming in at different angles but the light-coloured material remains, proves that it’s not an illusion or the result of erosion. Moreover, NASA reported that flows of water could persist long enough to carve gullies about 500 meters long. also, deposits such as dust or liquid carbon dioxide are unlikely because the craters are not obviously dusty, and carbon dioxide would not stay liquid at Martian atmospheric pressure. Since mid-90′s the trace of water’s existance began and in 2000 Michael Malin and Kenneth Edgett of Malin Space Science Systems in San Diego first reported the existence of gullies in crater slopes which started the speculation of this being a possibility. Researchers have speculated that the flowing of groundwater or melted ground ice could have formed gullies. however, the deposit/ice formed in the rock is acting as a dam and when the pressure of water is high enough, it explodes through the dam with the debris which formed the dam. in the last seven years 20 new impact craters formed which will be used to understand the planets geological features.
    The only mission at Mars is to find water due to its connection to life and understand the climate as stated by Gilmore. To conclude, Mars is more a live than it seems to be.

  9. Dead Planet
    By: Hassan Khalif

    The article from the above link is about the suggestion that there is water on mars. The idea comes from the observation of “gullies” or streams of light-coloured material that have formed on the sides of craters over the past years. The pictures ,which are the source of the speculations, show a crater at two different time periods. The first being of the crater in question during 1999, the other is the same crater several years later but with a light-coloured deposit, presumably water. The first reported existence of gullies in crater slopes was in 2000 by Michael Malin and Kenneth Edgett of Malin Space Science Systems in San Diego. Research has shown the findings not to be a hoax. One example of this was an image from a MOC ( mars orbital camera) in April 2005 that showed a deposit on the side of a crater that wasn’t there in an image from December 2001. Different views of the deposit were taken at different times in which the angle of the sun coming in was different, but the light-coloured material was still present. This would suggest that it is not an optical illusion due to the light or erosions. According to NASA’s simulation report, the liquid water would only stay unfrozen for long enough periods of time to carve gullies 500 meters long. Researchers believe that the water comes from groundwater or melted ground ice. Other explanations have proven unlikely such as liquid carbon dioxide or dust making up the deposits. Martha Gilmore of Wesleyan University states, “The craters are not obviously dusty, and carbon dioxide would not stay liquid at Martian atmospheric pressure”. Many members of the astrological community are hopeful that these speculations lead them to other findings, but for now they are given the hope that Mars may not be a dead planet.

  10. This article,”Martian Gullies Show Traces of Flowing Water within the Past Decade”, discusses the possible existence of liquid water on the planet Mars today. Images of a crater taken by the Mars Global Surveyor spacecraft before 1999 and and image of the same crater taken recenlty have been compared. The recent image of the crater shows tracks of light-coloured tracks which were not present in the image taken about 7 years ago. They believe that these light-coloured tracks may be water for a number of reason. One reason being the tracks branch and flow around obstacles like a watery sediment would. A second reason is the fact that the light-coloured material remains while the sun’s light is coming from different angles, which suggests that it is not a trick of light or result of erosion. Another reason is the NASA simulations reported last year that flows of water could persist long enough to to carve gullies about 500 meters long. Also, explanations for the deposits such as dust or liquid carbon dioxide are unlikely because the craters are not obviously dusty and carbon dioxide wouldn’t stay liquid at Martiian atmospheric pressure. The Mars exploration program’s lead scientist Michael Mayer of NASA said, “The program has been following the water since the mid-90′s, and now we have found it.” The existence of gullies in crater slopes were first reported in 200 one by Michael Malin and Kenneth Edgett of Malin Space Science Systems in San Diego. Michael Malin says what they think is actually happening is there’s ice formed in the rock and it’s acting liek a dam. This causes the water to build up and when the pressure of the water is high enough , it breaks through the dam and a lot of water and debris from the dam comes out. Planetary scientist Martha Gilmore of Wesleyan University says their mission at Mars is to find water because of its connection to life and they also want to understand the history of the climate on the planet. This recent knowledge and research tells us that the climate on Mars is more variable than ever imagined and that Mars is certainly not a dead planet.

  11. The article “Martian Gullies Show Traces of Flowing Water within the Past Decade” suggests that deposits formed in Martian gullies contain liquid water. The speculations that try to prove the images captured by the Mars Orbital Camera (MOC), suggest that water that could endure the cold and thin atmosphere, and not evaporate, can carve gullies 500 meters long. This is according to simulations done by NASA last year.

    A statement by Michael Malin, of Malin Space Science Systems in San Diego, who is one of the that first reported the existence of gullies in crater slopes says. “We think what’s actually happening is that there’s ice formed in the rock and it’s acting as a dam, and then water builds up behind that ice dam. When the pressure of that water gets high enough, it breaks through the dam and out comes a lot of water and the debris that was forming the dam.”

    This great and new finding as has made us reconsider Mars as a dead planet, as we might be soon considering it as a planet that could possibly sustain life.

  12. The article “Martian Gullies show traces of flowing water within the past decade” is basically talking about the discovery of trace of flowing water on Mars. Researchers have located two downhill tracks of light-colored material that were not present in images taken by the Mars Global Surveyor spacecraft before 1999. These tracks have been found on the downward sloping hills of a crater. The Mars exploration program has been following the water since the mid-’90s, and now we have found it,” said the program’s lead scientist, Michael Mayer of NASA, at a press conference. In April 2005 the MOC had an image showing deposit on the wall of a crater, which was not there in the previous pictures from December 2001. Similarly, an image from a second crater shows the deposit formed after February 2004. “We think what’s actually happening is that there’s ice formed in the rock and it’s acting as a dam, and then water builds up behind that ice dam,” Malin says in a NASA statement. “When the pressure of that water gets high enough, it breaks through the dam and out comes a lot of water and the debris that was forming the dam.” In other words Mars is not a dead planet and traces of flowing water is the connection to life on Mars.

  13. In my opinion, life on another planet is unlikely, since life on earth is due to the very delicate balance of the earth being not too far away and not too close to the sun. However, since there are some types of chemoautotrophs that can thrive in very hot places, such as deap sea hot vents or the near boiling water of hot springs, with little or no oxygen, there may be some bacteria or other very primitive organisms that have evolved to suit the coldness or heat of other planets. As far as life on Mars is concerned, I think its very unlikely anything exists there, besides the occasional bacteria, since most living things leave there mark i.e. the buildings and roads of humans, or how beavers build there dams. I think that Mars may have supported life millions or thousands of years ago since water is very much connected to and symbolizes life, but then perhaps an asteroid/meteor knocked it out of its orbit and sent it a little farther away from the sun and it became uninhabitable by higher organisms such as humans. (Maybe this crazy shock on Mars shook the Earth too, causing the dinosaurs to die?) So there might be many fossils and skeletal remains on Mars which have been covered by sediment. Another thing is that perhaps if something does live on planets farther away from the sun (cold as hell), they would be much more bigger, harsher and rougher compared to humans since they have to maintain a livable body temperature and are exposed to a merciless environment. In my imagination there probably are such creatures, but in reality the probability of this is very, very less, if none at all. Will we ever colonize Mars? I think hell no, never ever ever because we would run out of resources before we can even plan such a costly ambition, and since Mars is pretty much frozen on the surface, harvesting the planet’s (Mars’s) resources would probably kill off the possible inhabitants. eZ.

  14. My thoughts on the topic
    Mars is the most earth-like of all planets, due to it’s polar caps, an atmosphere with meteorological activity over a stony surface, a comparable rotation period (length of day), seasonal variations, and dark lakes, oceans between bright continents and the landforms, including high volcanoes, huge canyons, extended chaotic terrain and deposits in the gullies which shows the present of liquid water as observed by researchers(which may mean that a water cycle is effective and that planet Mars is not completely dead). However, atmospheric pressure varies significantly compared to that of Earth. Due to significantly low atmospheric pressure on Mars, fatal consequence may occur since the inner and atmospheric pressures lack of balance. Moreover, Mars is extremely cold. Temperatures on the planet fluctuate between -120° and 0° Celsius. Frostbite would immediately set in to any part of the body left exposed without adequate thermal protection. Another consideration, Mars’s atmosphere is only 1-3% as dense as Earth’s meaning that Mars’ atmosphere is so thin that liquids such as water boil and evaporate very quickly and ultraviolet radiation cannot be blocked by Mars’ atmosphere and continue direct to the surface which will have a deadly outcome causing both skin cancers and generalized cancers such as leukemia. Last but not least, the Martian air has a very low amount of oxygen (0.13%) compared to that of earth (20.94%) which is impossible to carry on life. The low value of gravity (3.92N) while the earth’s garvity is 9.8N.
    To conclude, life in Mars is absolutely impossible!

  15. My Thoughts on the topic- Second Post

    In my opinion, it is possible to colonize Mars in the future. As recent findings have shown, there is the presence of water- the main, vital source of life for living organisms. However, it would be very difficult to colonize Mars since it is inadequately suitable for humans to live in. Firstly, its’ gravity is only 38% strong as that of the Earth. Furthermore, Mars’s atmosphere is very thin and consists mostly of carbon dioxide, which is harmful to human beings. Also, since its’ atmosphere is very thin, there is little protection from harmful radiation. Another important factor to take into consideration is the planet’s climate. Since Mars is farther away from the sun, its’ climate is way colder than that of the Earth; the average temperature is -60°C. In addition, there are fierce winds that blow dust in the air and are responsible for violent sand storms that last for several months. Due to these various issues, colonizing Mars would be possible, but very difficult. Thus, it would be necessary for scientists to invent new equipment or come up with new ideas that would enable humans to live in a planet with such different conditions.

  16. Thoughts to idea of living in space
    By Hassan Khalif

    The idea of living on mars has been a long fantasy of many sci-fi lovers for years. Since the golden days of Star Wars and Star Trek people had always hoped for this to happen in their lifetime. The idea of living in space unfortunately is nothing more than a fantasy. Many people who saw the first space walk are still alive, within that time to the present no other significant feats have been made. In the year 2006, we are still wondering whether or not water exists on mars. Many scientists still believe that one day we will inhabit Mars and colonize it. I don’t believe we will ever colonize mars. Here on Earth, we are struggling with our very limited resources and no one is willing to spend that much money on something that won’t benefit us in our own lifetime. The fact that water might be present does not change anything. The atmosphere is not able to support advanced life such as humans. On a planet with an abundance of resources such as earth, we are still running them dry. What hope do we have on a planet where we would have to limit ourselves, which we can barely do in the here and now. Overall the idea of colonizing Mars may not be so farfetched, but it is improbable.

  17. “My thoughts on the topic – Second post”

    This article is related to the research the by scientists which has been going on from years to prove that mars is not a dead planet and has signs of life and the best prove would be the discovery of water been present at the mars planet .
    The research and observations tells that water is in small quantities but is present on mars. The speculation that was made that made them think that water is present on mars was that water formed gullies on the planet that persist long enough to form gullies and that water flows around the obstacles and formed channels. Thus the research that was going on from years now has proof and hope to continue their exploration.

  18. My Thoughts on the Topic – Second Post

    The possibility of life on Mars is a topic that has intrigued our minds for many years. The similarities between Martian and Earth temperature and atmosphere, indicates the close resemblance that the two planets have with each other. This could be a possible reason for the idea that Mars could have a potential for life.

    A fundamental requirement for life on Earth is water. If water were to be found on Mars, the speculation of the existence of life would be increased.
    As Tahir, Hassan and Maaz mentioned in their presentation of carbon dating, carbon is present in all living organisms. Therefore, carbon must be a building block of life. If scientists were to find traces of carbon on Mars (in different forms), a deeper understanding of life could be gained.

    We have to take into consideration the fact that OUR definition of LIFE (and its characteristics) are comparisons to those on Earth. Our definition may not be applicable to non-Earth circumstances. On other planets, how can we separate life from nonlife? It is possible that a life form exists that we (as inhabitants of Earth) are totally unaware of; a form that has nothing to do with water or carbon; a form that has chemistry that we’ve never seen before; a form that we don’t even consider life. Life could come in all forms, recognizing them is the hard part.

    The thought of extraterrestrial creatures is fascinating and frightening at the same time. As Marie Curie said “Nothing in life is to be feared, it is only to be understood”.

    Doubt and skepticism exist, but every once in a while, the question comes up……

    ”What if?”

    References :

    http://en.wikipedia.org/wiki/Life_on_Mars
    http://mars.jpl.nasa.gov/science/life/
    http://news.nationalgeographic.com/news/2003/06/0611_030611_marslife.html

  19. As seen in movies, and usually conversations among the society that perceive the concept of “life in outer space” to be often under the impression that this refers to “Martians, aliens, and extra-terrestrial beings” on other planets. I, however, defy on those terms and believe there are no such things which exist. On the more general note, however, I do believe that there is the utmost possibility of life consisting on other planets in outer space in the future. The word “life” does not have to refer to aliens, or creepy mythical creatures that have four arms and three eyes. The more scientific reference for the term life is vaster; it refers to the condition that distinguishes organisms from inorganic objects and dead organisms that are manifested by growth through metabolism, reproduction, and the power of adaptation to environment through changes originating internally. According to recorded research and history, so far that has been no life form found yet. However, it is believed that if water is found to exist in a planet that there are possibilities of life forms to evolve. This is why Mars is being investigated so thoroughly. The probabilities of finding life forms theoretically would be considerably good since NASA has conducted numerous experiments none of which has lead to evidence of such findings of living organisms, but the key- water. Considering scientific thought, it can be said that where water is found- living organisms are present. Take the example of a dessert, it has a devoid of living organisms- however if you came across an oasis, you would find a prospering group of living organisms. Therefore, taking the example of Mars, even though NASA has not yet been able to find any direct evidence of living organisms it is quite possible that in the future it will be found. Since science has a history for having such a rapid rate of revolutionizing itself, it is quite possible it’s unpredictable what science can come up with next. Five years ago, we thought it was impossible to have complicated surgeries to remove cancerous cells that in the early stages infected in the most delicate of layers of tissue in your body, say your brain. However now, with the aid of nanotechnology, these surgeries are possible. Similarly, there is no doubting what technology and the further experiments NASA will perform to investigate this issue of life form in outer space can come up with. I, personally believe it is quite possible to find life forms in outer space, considering all of the above. Firstly because as I’ve mentioned before, these life forms do not have to be complex biological systems, they can be biologically simple like- algae. Mars could possibly colonize in the future as simple organisms, which are bound to evolve into more complex biological beings (maybe reach human level after many centuries). And finally, because there is no limits on science, and what came about happening in 5 years, which we never knew could happen, can most likely indicate that in the next 10 years a LOT has bound to happen.

  20. My thoughts on the topic – Second post

    As seen in movies, and usually conversations among the society that perceive the concept of “life in outer space” to be often under the impression that this refers to “Martians, aliens, and extra-terrestrial beings” on other planets. I, however, defy on those terms and believe there are no such things which exist. On the more general note, however, I do believe that there is the utmost possibility of life consisting on other planets in outer space in the future. The word “life” does not have to refer to aliens, or creepy mythical creatures that have four arms and three eyes. The more scientific reference for the term life is vaster; it refers to the condition that distinguishes organisms from inorganic objects and dead organisms that are manifested by growth through metabolism, reproduction, and the power of adaptation to environment through changes originating internally. According to recorded research and history, so far that has been no life form found yet. However, it is believed that if water is found to exist in a planet that there are possibilities of life forms to evolve. This is why Mars is being investigated so thoroughly. The probabilities of finding life forms theoretically would be considerably good since NASA has conducted numerous experiments none of which has lead to evidence of such findings of living organisms, but the key- water. Considering scientific thought, it can be said that where water is found- living organisms are present. Take the example of a dessert, it has a devoid of living organisms- however if you came across an oasis, you would find a prospering group of living organisms. Therefore, taking the example of Mars, even though NASA has not yet been able to find any direct evidence of living organisms it is quite possible that in the future it will be found. Since science has a history for having such a rapid rate of revolutionizing itself, it is quite possible it’s unpredictable what science can come up with next. Five years ago, we thought it was impossible to have complicated surgeries to remove cancerous cells that in the early stages infected in the most delicate of layers of tissue in your body, say your brain. However now, with the aid of nanotechnology, these surgeries are possible. Similarly, there is no doubting what technology and the further experiments NASA will perform to investigate this issue of life form in outer space can come up with. I, personally believe it is quite possible to find life forms in outer space, considering all of the above. Firstly because as I’ve mentioned before, these life forms do not have to be complex biological systems, they can be biologically simple like- algae. Mars could possibly colonize in the future as simple organisms, which are bound to evolve into more complex biological beings (maybe reach human level after many centuries). And finally, because there is no limits on science, and what came about happening in 5 years, which we never knew could happen, can most likely indicate that in the next 10 years a LOT has bound to happen.

  21. “My thoughts on the topic – Second post”

    In my opinion, I think the possibility the human race conolizing on Mars, is very much possible. I think that at this present time we’re gathering enough information to understand the atmosphere of mars. With that information I do believe that life on Mars is more than just a fantasy. I think the rising population and the strains on the Earth’s resources may require the Earth’s nations to get together and colonize Mars. I think the water is a much needed discovery, it’s needed to give hope to the scientists who want to advances in conolizing on Mars. The discovery of water on Mars is vital, because it proves that water is something that is not something that the human race has to worry about when conolizing. Since it’s part of the natural geographic of Mars it proves that Mars can support life. The major problems is just over coming any problems the atmosphere may cause to the human way of life.

  22. MY THOUGHTS ON THE TOPIC – SECOND POST

    The idea of life on Mars is a possibility, but the idea of human kind to ever colonize on Mars seems fictitious to me. The small amount of water that was found in the crater is a great discovery which could help prove life on Mars. For human kind to ever be able to colonize on Mars we would have to adjust to the inhabitable conditions of Mars, which to me, seem impossible in the near future. Since water is one of the primary elements that help sustain life, I think that there could already be life on Mars, and that it could already have been colonized.

  23. “My thoughts on the topic”- Second Post

    Superstitious believers, who see the world on a much greater scale, are sure to tell you that extra terrestrial creatures do indeed exist. The media further poses as an outlet for ideas involved with UFO activities, and life on other planets. Now, the question is, is it possible for life to be sustained out there? In speculation, I’d say, perhaps.

    Besides, if life can be sustained on planet earth, why would we not be able to colonize on Mars? What many believers fail to recognize is the absence of essential elements on other planets. Conditions on mars are far different from that on earth. Temperatures, air pressures, content, and quality, and the presence of water, are a few of numerous other factors that contribute to the possibility for life to be sustained. However, the article at the link above seems to spark prospects of the existence of water. Because we know water as a fundamental necessity for life, researchers are thus speculating this possibility. In this respect, I would say that it may be possible for life to be sustained, for example, small mosses or fungi. This type if life may be sparse, and not too far along in the food chain, but is still distinguished from biotic and abiotic. Mosses would definitely be a living organism compared to the rocks and non-living matter.

    In terms of colonizing on Mars, I would say that the possibility is slim. Because conditions on Mars are quite harsh for life, if a small colony where placed on there, I highly doubt survival let alone prosperity. Temperatures are extremely cold, brutal sandstorms replace the absence of rain, and the carbon dioxide within the atmosphere is dangerous for human intake, not to mention the fact that gravity will not allow for us to stabilize on the ground. So who would want to be frozen, while being beaten in theses sand storms, inhaling “death” and hovering in mid-air? Not too many, as I’d see it. These uncomfortable and unsuitable conditions would chase away any potential mars residents, before the possibility of sustaining life can even be confirmed. However, because of advances in technology, combined with the passage of time, we have yet to know, and much to learn, of life outside of planet earth.

  24. “My thoughts on the topic – Second post”
    From very long since, it has been considered as a general topic that took place in many researcher’s mind. And that is none other than the probability of life in Mars. Mars is such a planet, that has a close similarity to the characteristics of the earth (in comparison with other planets); at least, its stony and mountanous surface, volcanoes, huge canoes, chaotic tarrains and deposits in the gullies etc. tell us that. And recently the discovery of liquid in Mars give this topic a shape to believe that it’s possible to have living beings in Mars. As far as researchers were concerned about the probability of water in Mars, it can be said in my opinion that there is a slight probability of life to live there. Maybe, there’s no human there; it’s not actually possible too for human to live at the temparature and pressure of Mars as it is extremely unhabitable and unfriendly. But however, there maybe some bacteria or viruses (or maybe some other creatures in the past in my imagination!) used to live there; which can be stayed in the extreme conditions of Mars. Now the question is whether or not human can colonize Mars. Well, that’s a very hard question to answer. But in my opinion, as it’s the closest planet to the earth and thinking about the successes of the researchers day-by-day conserning about Mars, it’s very much possible to step up in the surface of Mars. Maybe not now, probably not in this century, but maybe oneday human will step up in Mars and colonize the “fantasy planet” Mars. But they have to first ensure everything to live there. Another question is does the meaning of water in Mars means anything? I think the answer supposes to be yes. As the water consists of hydrogen and oxygen, it clearly indicaes that oxygen is present in Mars. So who knows, maybe oneday some creature will use to live there!!! So, in conclusion it can be said that the probability of life in Mars is very low (0.00025789% in my opinion); however researchers should not loose their hopes of colonizing the Mars in future. Because, by seeing the growing populations in the whole world, I think it will soon be hard and questionable issue for human to live in the world and go to other places like moon or Mars!!!

  25. Summary
    This article is on the finding evidence and proof of water existence at the planet mars.
    The research has finally some evident speculations like water is the reason of gullies present at mars and the water has flown around obstacles leaving channels behind. There is not a very large quantity of water present at mars because the water would freeze at that temperature. Thus the article shares evidence and speculation made by the scientists who has been doing this research for years.

  26. My comment on the article.

    I think that yes there a possibility of life been present at Mars.The idea of life been only present at earth is very unlikely.The universe has millions of planets and yes the possibilty is very high . Now as the technmology is more advenced than ever it is possible to find more evidence such as the existence of water at mars. It can be very wrong too it is possible that there is no such thing close to the word life . This issue can have million of different answers as nothing can be said with hundred percent proof . This idea of life been present at mars or something close to is very scary and intersting at the same time . My personal belief is that eyeing Gods potential anything is possible and there can be million more things to observe and research in the this whole issue of astronomy.

  27. Advancements in technology in the time we live are so great that one can believe many things that would have been unbelievable decades ago. Our technology has increased to such an extent that I believe it has the capabilities to find life on planets such as Mars. I don’t mean life such as human life, I mean life in terms of small living organisms. There may be many organisms that populate the planet. My opinion is based on many facts. First and foremost the discovery of water is particularly important as it is an essential component of life. Secondly, there had been a meteorite which was discovered in Antarctica and its unique chemical signature confirmed it to be from mars. This meteorite contained worm like structures which suggest the existence of life. Further more, there had been recent discoveries of small terrestrial fossils of similar (nonbacterial) scale. Last but not least, in 1970’s The Viking landers were sent to mars and preformed two tests on the soil. The first one found no organic compounds where as the second one did. All in all, I think there is a possibility of finding small bacteria or organisms on the planet Mars, but the idea of colonizing it in the future seems too fictions to consider.

  28. Advancements in technology in the times we live in are so great that one can believe many things that would have been unbelievable decades ago. Our technology has increased to such an extent that I believe it has the capabilities to find life on planets such as Mars. I don’t mean life such as human life, I mean life in terms of small living organisms. There may be many organisms that populate the planet. My opinion is based on many facts. First and foremost the discovery of water is particularly important as it is an essential component of life. Secondly, there had been a meteorite which was discovered in Antarctica and its unique chemical signature confirmed it to be from mars. This meteorite contained worm like structures which suggest the existence of life. Further more, there had been recent discoveries of small terrestrial fossils of similar (nonbacterial) scale. Last but not least, in 1970’s The Viking landers were sent to mars and preformed two tests on the soil. The first one found no organic compounds where as the second one did. All in all, I think there is a possibility of finding small bacteria or organisms on the planet Mars, but the idea of colonizing it in the future seems too fictions to consider.

  29. Critique of Hassan Khalif’s Post

    It was very hard to pick a post to comment on, since they all had their own cool ideas. But since I have to, Im going to critique Hasan’s post…not that its bad or anything.

    1) I like Hasan’s realistic approach to the topic and I also liked the fact it was not too long.

    2) He has some powerful points which I agree with. i.e.

    ‘On a planet with an abundance of resources such as earth, we are still running them dry. What hope do we have on a planet where we would have to limit ourselves, which we can barely do in the here and now.’

    ‘Here on Earth, we are struggling with our very limited resources and no one is willing to spend that much money on something that won’t benefit us in our own lifetime.’

    3) I agree with the majority of his post, except this point:

    ‘The idea of living in space unfortunately is nothing more than a fantasy.’

    4) I think by saying such a statement he assumes that everything is done, human potential has been reached, he does not leave room in his post for further development and advances. Like Tanisha mentioned, 5 years ago people didn’t believe cancer treatments would be possible, Hasan maybe that kind of person who may one day be talked about as ‘People in the year 2006 said life on other planets is nothing more than a fantasy.’ He does not leave room in his post for things which may happen beyond human prediction and expectation, such as a revolution that may change human society and life and reduce the greed for money in people and increase self-control. I have a feeling your laughing Mr. Vincent, but we can always dream. What if something happens that reduces the wasting of the earth’s resources or completely stops it i.e. invention of recycleable and renewable sources of energy or something similar that gives us an abundance of resources to fund exploration and colonization.

    5) Im not making fun of Hasan’s post or anything, that’s just how I feel; so Hasan bro if you read this nothing personal eh. However, I have to say, all this ‘life in space’ stuff, and the posts of people I read, they all have a common assumption, that we’re talking life in our milky way galaxy only, the farther away from our sun the colder etc. I don’t think anyone but Uzma actually talked about the universe in general because there are many other stars which could be considered ‘Suns’ in their own galaxies, so what if theres life in another galaxy, a twin Earth perhaps? Hehehe, at the risk of sounding like a paranoid sci-fi freak, what if humans are not the only ones searching for life on other planets but the search has begun by something else aswell? Something very positive: If I did not know Hasan, I would think the post was written by a knowledgable scientist.

  30. ” Critique of Tariq Adam’s Post”
    I like the post of Tariq Adam, my fellow class-mate and friend. It’s full of many geographical informations concerning the pressure and temparature in Mars, Gravity in Mars, and many others. It’s a realistic one I have to say that.
    The thing I want to agree mostly in this post is that -“Mars’s atmosphere is only 1-3% as dense as Earth’s meaning that Mars’ atmosphere is so thin that liquids such as water boil and evaporate very quickly and ultraviolet radiation cannot be blocked by Mars’ atmosphere”, which can causes brutal outcome in human bodies. I also agree with the other informations about Mars’s geogrpahy provided by Tariq; in comparison with the earth.
    But however, I don’t agree (actually I completely disagree) with him about his negative attitudes about Mars as he said that it’s completely impossible to live in Mars. Because, as far as I am concerned about these space stuffs, I don’t think it’s actually impossible to have living beings in Mars, specially after that discovery of water in Mars.
    For example, 200 years ago from now on, we never thought that we could stepped in the surface of the moon (we couldn’t even think about going outside of the earth’s surface). But in 1969, astronauts proved that it’s possible not only to go to space, but also in the moon. So who knows, it will be possible by somehow in near future to go to the Mars and colonize it. But before that, it’s true that right now it seems completely impossible to live on Mars. Besides, probably in near future, human will have to think about their residences, as the population of the world is having a inverse proportional record in comparison with the land; which means everyday, population is increasing and land is decreasing (comparably). So I think it’s an important issue to think about.
    That’s the thing I want to disagree with in this post.

  31. The idea of life at mars is a possibility , the universe in bigger than our imagination anything which we are yet not confirmed of is a possibility . the existence of water at mars is a discovery which gives us that hint that maybe life is possible there , but the idea of humans living there is sort of unlikely as humans needs are a lot of things to survive and so far water is the only thing that humans know is present at mars .The thought of living at mars is interesting and leaves us to wonder about the million different types of thoughts . Personally i think that yes mars can have all different types of things that can make living there possible but on the otherhand it have none of the things that are neccesary for humas to survive there yes there can be other creatures living there … u never know. But as far as humans are concenred it seems very unlikely for me that they can survive there in the next few centuries.

  32. Critique of Raenesh’s Post
    Raenesh has done a good work supporting his idea but i strongly disagree with his opinion. It is clear that he’s main argument is that the possibility of water’s existance means there’s life on planet Mars. True, that water is essential for life but water cannot be the only essential factor of life. What about GRAVITY, ATMOSPHERIC PRESSURE, PROTECTION FROM HARMFUL SUN RAYS(U.V), TEMPERATURE, SOIL FERTILITY? They should also be present at a certain amount to make life possible. Oxygen is also essential for life! with the low rate of oxygen (0.13%) existance means no life on earth even if water is present. However the good thing about Raenesh’s post is that he supported he’s opinion with the latest discovery:”The discovery of water on Mars is vital, because it proves that water is something that is not something that the human race has to worry about when conolizing. Since it’s part of the natural geographic of Mars it proves that Mars can support life.” I also like this part because water is essential, and due to the presence of Carbon dioxide which will be transformed into oxygen once plants are grown and perform the process of photosynthesis resulting an increase of Oxygen level. To conclude the presence of water ONLY doesn’t mean that living on Mars is a possibility.

  33. “My thoughts on the topic – Second post”

    I believe that it is possible to have life on mars and to one day conolize there. The presence of water, which has an important connection to life and is an imperative source for living organisms, is a big reason why life would be possible on mars. However, i don’t see anything living there for a few more centuries and it would be very difficult for much to survive due to the harmful conditions. Many factors such as the climate, the gravity, the air quality, and the atmosphere. Mars if fartehr away from the sun than the Earth is which means it is very very cold. The gravity is not as strong as it is here on Earth and the air is filled with many harmful gases, mainly carbon dioxide which can be harmful to humans. Due to all these dangerous conditions, it would be very difficult to have life on mars, but it’s not impossible. Therefore, if scientists and astronauts continue to research and conduct experiments for a few more centuries and gain the knowledge and understanding needed to invent equipment or a way to have life on mars, i say life on mars is possilbe.

  34. My Thoughts on the Topic- Second Post

    Although there have been findings that indicate water, a source of life, on Mars, I don’t think humans will be able to colonize it any time soon . The “cold, thin atmosphere” is just not suited to humans. But I am sure some sort of life will definitely exist on Mars. No, I am not referring to aliens, but to plants which may be better suited to the environment on Mars than humans. The fact that water has been found on Mars is a very significant step to discovering other life forms there. Who knows, maybe someday, if we ever discover a way to defeat the harsh atmosphere on Mars, we might just be able to go shopping or vacation there.

  35. I’m Critiquing on Reneash’s post
    Hassan Khalif

    What I liked about Reanesh’s post was that he just didn’t give his opinion but he based it on information which he presented. He didn’t just say, “Ooooh, yeah space living is possible because they can you know”. Reanesh gave us facts based on present known knowledge. What I agree about this post is the fact that he stated that the discovery of water is a vital source needed if mars were to be colonized. Without water present, the possibility of living on mars would be impossible. I disagree with his take on the topic. I don’t believe that we will ever colonize mars. I don’t believe it’s possible because there are too many other things going on that we are focusing on. In the last forty years we’ve only been able to head to the moon. It was stated that it would take over eighty months to travel to mars with our current technology. All in all I believe that traveling to mars is an impossible task and I pity those who will chase such fiction.

  36. Critique of Alia’s Post

    1) I like that Alia’s post seems real. It’s easy to read, not too scientific and it’s as
    if she’s thinking out loud.

    2) A point that I agree with:

    “This issue can have million of different answers as nothing can be said with
    hundred percent proof.”

    Why I agree with it: The unsurity of what is actually out there, be it something or
    nothing, exists.

    3) A point that I disagree with:

    “Now as the technology is more advanced than ever it is possible to find more
    evidence…”

    4) Why I disagree with it: Major advancements in technology have been made, but
    I believe that the “evidence” gathered by these instruments
    will remain questionable. Findings couldn’t be referred to as
    “evidence” because of the uncertainty involved. More
    appropriately, it could be referred to as “circumstantial
    evidence”.

    5) Something positive:

    Alia,

    Mentioning both sides of the issue in a concise (and understandable way) was a
    good thing.

    * All of this extraterrestrial life stuff is…..like……. trying to choose between your brain and heart. There’s what you imagine, and then there’s reality. The thing is that you never really know. “What if humans are not the only ones searching for life on other planets but the search has begun by something else as well?” :)

  37. Critique of Hassan’s Post

    Hassan’s post was a great presentation of how he felt. I enjoyed reading the post, it gave me a great look at what a person debating the issue from the other side would use as their arguments. It also is designed to connect well with the reader, with references to Star Wars and Star Trek. I do agree with the idea he is implying about how it’s hard to belive that life being sustained in Mars is a near impossible feat, because of the lack of significant events following the landing on the Moon. Even with that agreement I have to say, that thought it appears near impossible, I believe that colonizing on Mars is the most important project that the world is working on, outside of cures to diseases. Just like our scientists had achieved the “impossible” mission to the moon, going to Mars is a new task, with new situations. Yes the gravity, temperature, atmosphere, and other charecteristics of the planet contrast greatly with Earth and the Moon, but if scientists are capable of sending robots that can be controlled to Mars, scientist’s shouldn’t be too far from rocketing themselves in to dreams of all NASA scientists. Hassan points out that no one is willling to bring out the big bucks to pay for this gigantic project. Sadly though, the Earth’s people need the money to be brought out, so that we could help even out the population on Earth, and not use up the resources. I think more money will be put in to this to achieve something that seems to be within the reach of mankind’s grasp. Above all of this I enjoyed reading Hassan’s article, it provided strong arguments in a clear format.

    P.S : It’s Reanesh not….Reneash

  38. Critique of Angelica’s Post

    1) I like the way Angelica’s post was written in an organized manner and was easy to read and understand. Her paragraph wasn’t too short and it wasn’t too long. I like how she didn’t talk with a bunch of scientific terms, which would have made it more complex and confusing.

    2) I agree with what Angelica says about how it would be very difficult to colonize on mars because the conditions are not fit for humans to live under. I agree with her factors about conditions such as the climate, gravity, and the atmosphere as I had similar points in my post.

    3) There wasn’t really anything I disagreed with in Angelica’s post. Everything seemed to be true and I agree with all that she had to say in her post.

    5) Angelica mentioning the necessary research and work of scientists to invent new equipment or find ideas of how to live on mars was a positive. This shows that she is thinking about the topic of life on mars and how it can turn out in the future.

    * Overall I believe that Angelica did a great job with her opinion on the possibility of life on mars and one day colonizing there. She had strong points to argue about and seemed to understand the topic very well. Her thoughts and ideas were clear and she was able to explain herself well. In conclusion, I think Angelica did a very good job on giving us her opinion about life on Mars being a possibility.

  39. Critique of Hasan’s Post

    I think overall, your posting is quite reasonable and you have a good debate. The fact about Earth’s resources and the slow decrease in regards of it, that it may be potentially lost is also a very good aspect to considar. It makes a lot of sense when you say that Mars may not be able to support humans because we are such complex biological systems. However, I choose to defy on some of your writing because you say that water makes no difference in believing there may be life. You can’t relate Earth’s deficient water resources with the fact that mars having the presence of water, because that doesn’t relate. When we have water, there is bound to have living organisms because that’s where life prospers, water’s properties are the key elements of life. I can make the observation of your posting to be that you are limiting your vision to one area, and that is the thought of earth’s deficient resources. But you’d be surprised to know how much NASA is obsessed with Mars, and will do whatever it takes to grasp a new a discovery. Another area that I suppose I have a different perspective of is that you believe that is IMPOSSIBLE. The implication of that means you close all the doors to any potential, you are underestimating what science can do. You never know what will happen tomorrow. Present scientific theories and facts about Mar’s properties probably does point in the direction that at this moment, it is quite impossible, but tomorrow is another day; another potential door to the another hall way. Sometimes if you have to go a certain distance to see beyond it, maybe we just haven’t reached our turning point. But who knows one day we might! Other than that, it was interesting to see your point of view. Your posting was structural and was presented in a well written manner. Good job.

  40. “Critique of Bilal Khan’s Post”

    1. I like the way Bilal explained the stance he took towards the topic.

    2. I agree with Bilal in some aspects. For example when Bilal said that “The small amount of water that was found in the crater is a great discovery which could help prove life on Mars” and “Water is one of the primary elements that help sustain life”.

    3. However, I disagree with Bilal on the fact that he said that Mars had already been colonized and therefore there maybe life on Mars already. Bilal was not so clear in what he was trying to explain in this part of his article and therefore this can signify two things which Bilal had not mentioned. If Bilal was trying to say that there are aliens and extraterrestrial creatures living on Mars then I disagree with him. However, if he was referring to bacteria and other small creatures as the things that have already colonized on Mars then I agree with him to some extent.

    4. I disagree with the fact that Mars is already colonized by aliens because aliens are creatures which are fabricated. They are things we see in movies and read about in books. And the fact of them already colonizing Mars is unlikely. As for bacteria and other small creatures colonizing on Mars, this may be a possibility as the temperature and climate for Mars can be suitable for certain creatures.

    5. In all I would like to say that Bilal has done a good job in explaining himself and his views. Good Job!

  41. Critique of Bilal’s Post

    1.I think what was good about Bilal’s post was that it was well-written, clear and concise. I liked how it went straight to the point and was short and sweet.

    2.One point that I agree with in Bilal’s post is that in order for humankind to colonize Mars, they must be able to adjust to its inhabitable conditions. I agree with this idea because as I have mentioned in my post, Mars has many conditions that make it very difficult for humans to live in.

    3.However, I disagree with Bilal’s point that humankind will not be able to adjust to these conditions in the near future. I believe that it is possible for scientists and researchers to develop creative ways that will enable us to live in under these conditions due to the rapid increase of knowledge and technology.

    5.Overall, I enjoyed reading Bilal’s post. I think that Bilal did a good job organizing his ideas in an understandable way. He used terms that were casual and easy to comprehend. I liked how he realized that the conditions on Mars have a great impact on whether or not humans can colonize the planet – it shows that he is being realistic and reasonable. Keep it up!

  42. “Critique of Bilal Khan’s Post”

    1. I like the way Bilal explained the stance he took towards the topic.

    2. I agree with Bilal in some aspects. For example when Bilal said that “The small amount of water that was found in the crater is a great discovery which could help prove life on Mars” and “Water is one of the primary elements that help sustain life”.

    3. However, I disagree with Bilal on the fact that he said that Mars had already been colonized and therefore there maybe life on Mars already. Bilal was not so clear in what he was trying to explain in this part of his article and therefore this can signify two things which Bilal had not mentioned. If Bilal was trying to say that there are aliens and extraterrestrial things on Mars that have already colonized the planet then I disagree with him. However, if he was referring to bacteria and other small creatures as the things that have already colonized on Mars then I agree with him to some extent.

    4. I disagree with the fact that Mars is already colonized by aliens because aliens are creatures which are fabricated. They are things we see in movies and read about in books. And the fact of them already colonizing Mars is unlikely.

    5. In all I would like to say that Bilal has done a good job in explaining himself and his views. Good Job!

  43. Critique of Alia’s Post:

    1) I like how alia got her point accross, makeing her post short and sweet.

    2) In her post i agree with her opinion of existence of life on mars.

  44. Critique of Alia’s Post:

    1) I like how alia got her point accross, makeing her post short and sweet.

    2) In her post i agree with her opinion of existence of life on mars.

    “I think that yes there a possibility of life been present at Mars.The idea of life been only present at earth is very unlikely.The universe has millions of planets and yes the possibilty is very high .”

    3) One thing that i dont agree with is her saying that “it is possible that there is no such thing close to the word life.”

    4) If she means something like aliens that we see in fictious tv shows, i agree but if she means life even interms of organisims or even small creatures than i have to disagree. There is too much evidence to ignore that some type of life exits. Water, the earth like atmosphere suggests that mars has somewhat cpability of handling small types of life which have adapted to its environment.

    5) Alias post was written well. She left room in her post for possibilities of future advancements.

  45. Well, i give up finding other places to post about the make up topic so here it goes…

    Summary of make up assignment.

    Niel basically explains the extinction of the dinosaurs by the giant asteroid called K-T (i think thats what he called it). Then he goes on about how this event gave our ancestors the chance to thrive and become what we are today and ending with how we can’t live with asteroids and how we can’t live without them.

    opinion part.

    Well, his ending line makes me think, “can’t live with asteroids and can’t live without them”. To me, it sounds like asteroids is natures way of begining and ending an era.
    For example with the impact of the giant asteroid thousands of years ago the era of the dinosaurs ended and the age of man began. This is interesting and all but how do we know an asteroid was the cause of death for the dinosaurs. The Asteroid theory is only 1 of many theories on how the dinosaurs died. According to
    http://www.ucmp.berkeley.edu/diapsids/extinction.html there has been many other cases where mass extinctions have occured. For example the permo-triassic extinction between the permian and Triassic periods was the most catastrophic event, life on earth was nearly completely wiped out, around 90% of all species were extinguished. Scientists are fairly sure that this was caused because of changing global conditions but this has yet to be proven. This makes me think again, what if this is natures way of continuing evolution. In every case of mass extinction the most adaptable and i suppose smarter species were left alive. However according to http://www.dbc.uci.edu/~sustain/bio65/lec02/b65lec02.htm the asteroid that lead to the extinction to the dinosaurs would have to create a crater at least 100 miles in diameter. Fortunately scientists have uncovered craters all over the world one being 200 miles in diameter buried underwater off the coast of the yucatan peninsula in central america and seems to have hit around the time the dinosaurs became extinct.
    As for the permo-triassic mass extinction there is a giant impact crater in northwestern Australia that has been dated to the end of the permian period which suggests the mass extinction was caused by an asteriod that time too.
    Well, i can go on forever and debate with myself whether or not we can’t live with asteriods and can’t live without them but i’m getting bored so i’ll end it here.

  46. SUMMARY.

    In this presentation about “The Cosmic Prespective” , Neil Degrasse Tyson tried to say that asteroids and natural disasters can have a lot affects in the ecosystem of earth. For example, he explained that tons of earth’s crusts can go high at the atmosphere and can cause a devastating assassination in earth. He even gave a definition concerning the end of dinosaur era; which happened approximately 65 million years ago with the strike of an asteroid called K-T and destroyed about two-third of the species. He said among those creatures who survived from that brutality, we found the mammal ancestors and more specifically the people today. He eventually saw some advantages of crushing the asteroids on earth. That’s why he concluded his presentation like this, “ Asteroids ! We can live without them, we can’t live without them”.

  47. Opinion.

    This presentation was done by a famous American astrophysicist named Dr. Neil Degrasse Tyson. In my opinion I have to say that this is the weirdest topic I have ever read in my life. At the same time it’s very interesting too to me. Specially the last few sentences of Dr. Neil really hold my nerves for at least some minutes. His words,
    “Asteroids ! We can live without them, we can’t live without them”, eventually failed to have my support through his thinking.

    By that word he was showing a bit selfishness in my opinion. If he was living in that time, I think he couldn’t say that kind of word. So, he meant that if asteroids will hit the earth again and destroy everything once again, earth will have a more better species than human? If he meant that, I have to say that then it will seem to be very ruthless and selfish stuffs from a famous person (to many people). Obviously I know that the difference between my capacity of thinking and his is lot far. Maybe he meant some good stuffs by that, which accidentally couldn’t get my brain. But I think I am right in my opinion.

    Thank you Mr. Vincent for giving us such a topic to work.

  48. Comment on Ken Lagos’s opinion.

    The comment of Ken is actually very thrilling and realistic. He gave a lot of logical explanations about the fact the dinosaurs could be destroyed by other mass extinctions and he actually questioned that how do we know that dinosaurs was destroyed by K-T. That’s a good sight to me of questioning that. Because, ever since I finished watching that video, the same question was exciting the era of my mind.

    Ken said, “This is interesting and all but how do we know an asteroid was the cause of death for the dinosaurs. The Asteroid theory is only 1 of many theories on how the dinosaurs died.”

    But I am actually dissapointed too at the same time that he actually didn’t have any faith over astrophsycological theory. Dr. neil is a famous american astropsycologist and it is already proved that T-K could have a slight impact on the end of Dinosaur reigns. At least, the informations that scientists got proved that. This is the one thing that I don’t like about this post.

    Ken could ask me that I also have a negative impression about Dr. Neil about his words (as I said that Dr. Neil is a famous person and I am damn sure what I was trying to say to him), “ Asteroids ! Man can live without them, man can’t live without them.” Yes, I disagreed with Dr. Neil in that area and I had some explanations for my thinking.

    Anyway, brother. It’s too messy and complicated and as you said that this debate is hard to be stopped and I really agreed with that. Don’t mind if I said anything that hurt you. You did a really great job. Bravo, Ken !!!

  49. Part 1:Summary

    In this clip he is basically talkin about how important asteroids are and how much more we need to know about them.If an asteriod hits the planet earth,it will leave most life extinct.Earth can have a much better species than us humas beacause we are basically distroy the planet that we are living on.He mentioned that around 65 million years ago the dinosaurs were destroyed by something called a “K-T” i dont really know what this is but im planning on reading on it.Another thing he mentioned was the countless tones of the earth’s crust and break up all the food chains so it will be hard for the animals to get their food and also cause devastating assassination in the earth.

    Part 2:Opinion

    I really loved the topic that Dr.Neil is talking about beacause this is a very importand issue and i barley hear people talking on asteriods and how dangerous it is for us humans.In My knowledge i never really thought of asteriods that way ”We can live without them, we can’t live without them” When i first read what the topics was about i was like damnnn this is going to be pretty boring but then it was really interesting in the end.

    Part 3:Comment on friends opinion

    I Would Choose the comment of Wasi because i think he had alot of good and important points in the opinion part.I like how he was honest and even typed down the negative parts that he thought Dr.Neil said in the Clip.

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