Is there life on other planets?
912860
I highly doubt that there is intelligent life in our solar system there might be organisms on other planets like Mars. But there IS life some where out there. The Earth is infinately small compared to the the universe because the universe is forever expanding. There is no telling how many trillions and trillions of planets have intelligent life roaming around wondering if there is life on other planets just like we are.
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
18963
This is a little hard to answer.\n\nFirst, we haven't found any.  So there's no positive evidence, so it's hard to be really sure. \n\nBut on the other hand, there are billions and billions of planets like ours, and it would be really weird if ours was the only one to have life on it.\n\nSo most astronomers think there's probably life out there somewhere.  I hope we find it.
611976
Definitely.  Even if its just some microbes out in space, just the sheer number of planets and stars etc I would think there would have to be other life out there!
332737
This is interesting question. My opinion is: why not!! Maybe some forms of life that we don't know. There is some life forms even 11 km under the sea, under extremely high pressure. Some kinds of bacteria live without air too. Fish don't use the same air like us, but they are alive. There is so many different forms of life even on planet Earth, so why not on other planets? After all, if we did not see something, don't mean this don't exist!
473205
ahhhh the holy grail of questions... do extra-terrestrials exist.  Well, I would have to say yes.\n\nKeep in mind Earth is like a grain of sand on the beach. It would be extremely hard to find anything.  Here is a cool link to check out...\n\nwww.seti.org\n\nthere is actually an equation to figure out if there is life elsewhere. click 'center for study of life in the universe' then scroll down to where it says 'drake equation.'\n\nFun stuff!
339938
No, as satellites and probes have been sent around the solar system, even behind the sun. There is no evidence of another planet on the other side of the sun. \n\nIn a hypothetical world where there is a planet on the other side of the sun, the gravity pull from the planet will distort the orbits of the closer planets i.e Mars and Venus. This distortion can be extrapolated by astronomists to determine the size and speed of the planet. However the existing 9 planets have all orbits accounted for.
602526
No body know for certain. However, the universe is so vast, with so many celestial bodies that it seems rather improbable if the only place in the whole mutiverse that harbors life is planet Earth.
327734
I don't know about experiments and alien visits. But I know that I'd like to think that there is more out there some where. I don't even know if there is a chance that other intelegent life exists for not but I can't help but think that other planets in the universe have to be suitable for some form of life and continue to sustain something. We may never find it or know about it, especailly in this life time but there has to be more than just Earth.
839167
No they live on different planets
414226
Yes, there has to be.  The universe is immense with many galaxies, and many suns.  There must be a lot of similar planets out there somewhere, why should there be only Earth with life?  We might never meet any extraterrestrials, probably aren't supposed to, which could explain the vast distances.  Some other beings exist now, or were extinct eons ago, or are yet to be.  I think they are a lot like us, not made of electricity or silicon, or in only two dimensions like some sci fi.
249308
Sure why not.\n\nJust look up in the night sky. There are so many starts we can see, and untold planets we can't. This is just one galaxy. There are so many more out there in the univers. It is really silly to think that with all those planets, ours is the only one that has life.\nOur planet is still a young one. I'm sure there are life forms on other planets that have technology we can't begin to comprehend
1126911
I believe there is life other than on Earth. Even if just mathematically!\nAn interesting point though, is that the authorities on this field have concluded that the nearest system that COULD support life is Sirius. That's interesting, because throughout history, the more believable tales of alien contact seem to all point to that star system. The Dogon tribe are a classic example of that. They apparently knew of Sirius A and its two companions(Sirius B and Sirius C) long before any 'civilised' society. Sirius C has yet to be discovered, but could well be there! I quote from Wikipedia: "Apparent orbital irregularities in Sirius B have been observed since 1894, suggesting a third very small companion star, but this has never been definitely confirmed." \n\nAs to us being Parasites on this Living Planet, I couldn't agree more.
27853
Since there are so many planets out there, and we only know so much about our own solar system, and then there are all these OTHER solar systems out there, it would be almost silly to presume Earth is the only one w/ life.  But are there aliens out there that look like Hollywood aliens?  that's probably going to remain an open question!
839196
It is more likely than not that there are many planets in the universe with life and many of those may have "intelligent" life.\n\nWe have just only obtained the ability to detect planets in other solar systems and we can only detect very large ones. We do not have the ability to detect Earth like planets.\n\nWithin our own solar system, we have yet to find undisputable evidence of life on any of the planets we have activley searched for it. Many scientists are optimistic about finding microbial life forms within our solar system though. There are still pleanty of places on Mars, for example, that we simply haven't looked, and there are many moons in our solar system with the potential for supporting microbial, and even more complex life forms. Jupiter's moon Europa is a good candidate because it is covered by a sheet of ice and thought to have liquid water oceans underneath. Due to Jupiter's gravity constantly tugging on the planet, it is likely geologically active and thermal vents may exist in it's under ice oceans. Here on Earth, underwater thermal vents are teeming with life, even though no sun light reaches them.
647533
There are too many other planets in the universe to say that ours is the only one with intelligent life on it! That's human arrogance to say this one planet is the only one with intelligent life. Since we haven't meet any,then their aren't any! Is what most people believe,but I think their is! Everyday we are finding new forms of life right here on our own earth that we didn't now was here,til we found it. Space is so vast, the universe is endless and other species from other worlds probably face the same challenges that we do in space exploration. They haven't discovered how to travel through space and such great distants just as we haven't. Or have they? Remember The Thing! Who knows what could be frozen under the Artic and how long it's been there! Also, I believe that their are species much stronger than us, with the power to inslave us or put us on the food chain. I know this is far out,but think about it...we as humans eat every other animal on the planet cause were the strongest! Now if a stronger species than man took over the earth,who knows man could be on the menu!!!
249386
Yes, I do believe that life does exist in the universe on other planets. its doesnt mean that life is there only on Earth n in our solar system of the STAR SUN.\nIf u c there r millions of stars in the universe and triliions of planets so there is a possibility to find a planet similar or exact as EARTH which has the same atmosphere or maybe the same gravitational field or perhaps the same solar system is repeated somewhere in the universe. Thanx\n\n\nLuqman Cheema\nIslamabad, Pakistan