Life on Mars . Is it even possible?
605835
No, not yet. We're not that smart, yet.
574493
Recently new discoveries here on earth have proven that living organisms the size of the martian rock fossiles show do exist. Scientists did not believe living organisms could exist at this size until now. I am sure that absolute proof will be here within the next few years. This will undoubtedly prove once and for all life does exist elsewhere.
676296
It's completely beyond our current science and technology to replicate the environment of Mars with such precision that we could be confident that we'd have the exact same (or even similar) conditions for life as exist on Mars.\n\nIn addition, how would we replicate Mars' environment when we know so little about it?  You'd need to send thousands of probes to Mars to get enough information to even *begin* such an experiment ... and by the time you'd finish that, you could've already run a full set of experiments on Mars testing directly for the past or present existence of native life forms.\n\nA planet's biosphere is an incredibly complicated thing.  It's something that scientists seem to only now be learning about our own biosphere, unfortunately a bit too late.
828326
scientists believe there may be life on Mars because Mars have water in its atmosphere. It may only be a small amount, but could provide life to certain living organisms that need very little water
143137
I think so!\nIf life exists on the top of the large mountain where there is only snow and no oxygen in the air, then life should exist on other planets!\n\nDo you know that, life exists in deep sea where there is no sunlight! If life sunlight to live, how do you explain?\n\nLife also exist in caves very down in earth where no light is present. They are bacteria! They absorbe heat from boiling water, thats how they obtain their energy!\n\nThat may be quite enough to explain how life may exist in extreme conditions and thus beyond planet earth
427364
there hasn't been any found yet.... but... the possibility of life on other planets is very  high....  :)
617792
>>> Once the earth is over populated..\n\nThe Earth is never going to be overpopulated. The population is already stabilising and will begin to decline with your lifetime.\n\n>>>>>Are there evidences which can proove that\n>>>> humans can live on mars?\n\nNot a chance ATM. People can only barely live in Antarctica, and that is a place with fairly breathable atmosphere, mild temperatures and resupply possible for 6 months of every year. But life in Antarctica is still a struggle.\n\nMars makes Antarctica look like the Bahamas. Even the warmer parts of Mars are colder in mid-summer than an Antarctic winter. The atmosphere is unbreathable and we couldn't afford to re-supply more than once every three or four years. The absolute best we could hope for a few years for an exploration/research team to stay there.\n\n\n>>>>Research shws that theres life signal on mars..\n\nNo, it doesn't. Some very hopeful people and some people chasing funding have tried to spin it that way. There is absolutely no evidence that Mars has ever had life.\n\n>>>>if there is life on mars then human also \n>>> possible to live on mars.\n\nNo, it doesn't work that way. There is life at the bottom of the ocean too, and life in the interior mountains of Antarctica, and life 5 miles below the ground in solid rock. Humans can not possibly live in any of those places.\n\nThe simple presence of life does not mean that humans can survive in a location.
655979
THIS IS THE CRAZY ANSWER>>>>>>>>\n\nyes, there are vehicles that are not identifed.\n\nIf you mean other life forms then yes and no. It depends on what you mean by lifeform....\n\nThere is lifeforms on Mars and Venus and Earth is constantly vistited....\n\nHeres the crazy part....That these lives exist or rather are made up of a diffrent vibration than the physical plane... in other words its like Earth life is like an ice cube and Mars and Venus Life is like the Gas form of water.\n\nUFO exist and are made of thought energy...they are seen only when they want to be seen. They are constsantly visting earth helping allievate the amount of radiation we emmit...\n\nThey can not interfer with HUman free will which is why they do not present themselves...
24676
It depends on how fully terraformed Mars was and how risky the flight there would be.  Mars could conceivably be terraformed into a beautiful Earth-like world.  Given safe transportation there, heck yeah I'd consider it, especially if they allowed homesteading.
524151
The idea that life could, or even does, exist on Mars has a long history. In 1877 the Italian astronomer Giovanni Schiaparelli claimed to have seen a planet-wide system of channels (Italian canali). The American astronomer Percival Lowell then popularized these faint lines as canals and held them out as proof of a vast attempt by intelligent beings to irrigate an arid planet. Subsequent spacecraft observations have shown that there are no canals on Mars, and various other alleged proofs of life on the planet have turned out to be equally illusory. The dark areas once thought to be oases are not green, as contrast effects had made them seem to terrestrial observers, and their spectra contain no evidence of organic materials. The seasonal changes in the appearance of these areas are not due to any vegetative cycle, but to seasonal Martian winds blowing sterile sand and dust. Water probably occurs only as ice on and below the surface and as trace amounts of vapour or ice crystals in the Martian atmosphere. The strongest evidence against the presence of life, however, is the thinness of the atmosphere and the fact that the surface of the planet is exposed not only to lethal doses of solar ultraviolet radiation but also to the chemical effects of highly oxidizing substances (such as hydrogen peroxide) produced by photochemistry.\n\nPerhaps the most fundamental and far-reaching result obtained by the Viking landers is that the Martian soil contains no organic material (there is no reason to assume that the two landing sites are not representative of the planet as a whole). Although small amounts of organic molecules are continually being supplied to the surface of Mars by carbonaceous meteoroids, this material is apparently destroyed before it has a chance to accumulate. The results of the soil analysis for organic molecules carried out by the Viking landers provide no evidence for the existence of life.\n\n Answering the question of life on Mars will probably involve...returning [samples] to Earth  \n\nA more difficult question is whether life has ever existed on Mars, given the strong evidence of climatic change and the indications of a previously warmer, thicker atmosphere. Suggestions that structures found in a meteorite discovered in Antarctica, which may have been blasted off the Martian surface, were fossil traces of bacteria-like organisms have since been discounted. However, answering the question of life on Mars will probably involve collecting carefully selected subsurface samples and returning them to Earth for detailed analysis. NASA has proposed a manned expedition to Mars early in the 21st century.
719596
Well Scientists have long speculated about the possibility of life on Mars due to that planet's proximity and similarity to Earth. It remains an open question whether life exists on Mars now, or existed there in the past.\nIt has long been speculated that there may be life on Mars, due to the many similarities the planet has with Earth. Mars' polar ice-caps were observed as early as the mid-17th century, and they were first proven to grow and shrink alternately, in the summer and winter of each hemisphere, by William Herschel in the latter part of the 18th century. By the mid-19th century, astronomers knew that Mars had certain other similarities to Earth, for example that the length of a day on Mars was almost the same as a day on Earth. They also knew that its axial tilt was similar to Earth's, which meant it experienced seasons just as Earth does - but of nearly double the length owing to its much longer year. These observations led to the increase in speculation that the darker albedo features were water, and brighter ones were land. It was therefore natural to suppose that Mars may be inhabited by some form of life.\n\nSpeculation about life on Mars exploded in the late 19th century, following telescopic observation of apparent canals — which were later found to be optical illusions. In 1854 William Whewell, a fellow of Trinity College, Cambridge, who popularized the word scientist, theorized that Mars had seas, land and possibly life forms. In 1895, American astronomer Percival Lowell published his book Mars, followed by Mars and its Canals in 1906, proposing that the canals were the work of a long-gone civilization. This idea led British writer H. G. Wells to write The War of the Worlds in 1897, telling of an invasion by aliens from Mars who were fleeing the planet’s desiccation.\n\nBetter telescope imagery, and especially the photos taken by the Mariner 4 probe in 1965 showed an arid Mars without rivers, oceans or any signs of life. Intense UV radiation made the planet extremely hostile to life as we know it. Officially the Viking lander's tests for microbes in 1976 were inconclusive, but most scientists hold that their findings can be explained on the basis of chemical reactions alone. Observations made in the late 1990's by the Mars Global Surveyor confirmed the suspicion that Mars, unlike Earth, no longer possessed a substantial global magnetic field, thus allowing potentially life-threatening cosmic radiation to reach the planet's surface. Scientists also speculate that the lack of shielding due to Mars' diminished global magnetic field helped the solar wind blow away much of Mars' atmosphere over the course of several billion years.\n\n\n\n \nThe electron microscope revealed bacteria-like structures in meteorite fragment ALH84001 \nA series of artist's conceptions of hypothetical past water coverage on Mars.In recent years speculation has grown again, however – prodded by a study of the ALH84001 meteorite which concluded that it contained fossilized microbes. Other scientists have subsequently sought to explain these findings on the basis of chemical processes. Both remain highly controversial within the scientific community.\n\nAnother glimmer of hope for past and present life on Mars has been revealed with the ongoing research into extremophiles on Earth which survive under the harshest conditions. Some scientists have proposed a biological origin for the annual appearance and disappearance of dark dune spots near the polar regions of Mars.\n\n\n\nNo Mars probe since Viking has tested the Martian soil directly for signs of life. NASA's recent missions have focused on another question: whether Mars held lakes or oceans of liquid water on its surface in the ancient past. Many scientists have long held this to be almost self-evident based on various geological landforms on the planet, but others have proposed different explanations - wind erosion, carbon dioxide oceans,
1041987
Yes!  I think it could most definitely happen to us.  One would have to be very naive and simple-minded to think it could not happen.  Many people don't let current FACTS actually sink into their brain.  There are so many conditions on other planets that are habitable for small organisms.  Certain bacteria(extremophiles) thrive on extreme living conditions.  That is how life started on our planet, and if nothing else there are definitely other forms of life elsewhere.  But still, someone would have to be so self involved to think that there couldn't possibly be a other life form of superior intelligence.
815739
This is a brilliant thought. Please read the book "The Case for Mars" by Dr Robert Zubrin, PhD. for a nuts and bolts down to earth scientific discussion of what it would take to put men on Mars, and ultimately to turn Mars into an Earthlike planet. It is available on amazon.com and in many local bookstores. I highly recommend it.
148940
I think it would only be possible if there was also lots of water on the planet as well as good solar radiation being close to a star and carbon dioxide. Also it would be helpful if there was nitrogen in the soil since plants absorb nutrients from the soil. There would also need to be rainfall on the planet, but if there wasn't irrigation and watering by caretakers could be sufficient.\n\nAnd what about terraforming? Mars has an atmosphere and I beieve carbon dioxide. Could plants grow on Mars? We'd have to transport millions of gallons of water in our ships and keep the water from sinking deep into the planet. Why would we want to do that? It could cost a trillion dollars. The moon has no atmosphere I'm not sure it could be terraformed. Just a thought.
896421
Hi\nYes there are. There has been microscopic animals found in mars.
76504
First off for terraforming Mars you need to create an atmosphere.. then can you begin to "build" life on Mars..even with water you need an atmosphere..But also as stated earlier..Mars' magnetic field is not there..therefore nothing is stopping all the deadly radiations and other cosmic energies from bombarding the planet.
1046280
Sounds like you already know the answer to your own question...:)  Bottom line:  there is considerable evidence that there was once at least simple life on Mars.  There is some evidence that there may be simple life there now.  There isn't conclusive evidence of either of those things...so if we want to know, we need to keep exploring!