Is there Life of anykind beyond Planet Earth?
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
188093
I think there is definitely other forms of life. Whether there human or not don't know. Since humans haven't been around nearly as long as the planets, stars, galaxies etc. I would bet that there are far more intelligent life forms out there.
499462
life exists on other planets.  it may be something like bacteria, or something large and intelligent.  life was created by chance though, and Earth had 6 mass extinctions where each had the potential to stop life in its tracks.  ironcaly, the extinctions caused evolution to speed up, but thats getting off the subject.  if life is on other planets, which i amm sure of, they will be like nothing any human can think of.  look at earth and how only a continent away can cause large differences in animals.  the planet will provide different challenges for life and evolution to overcome, the life might not even have DNA and RNA, they may have a completely different nucleic acid/genetic material.  its unlikely we will ever find them within the next century, though.  we simply wont have the space travel capabilities.  in time, though, i am positive that we will stumble across life, may be just odd bacteria or could be something like the aliens from ALIEN or the Covenant from Halo games.  we just dont know.  lizard-men?  highly unlikely.
596996
Out of 10,000 Billion Galaxies out there. No Doubt there is something out there.\n\nEarth will contact something...but not in our lifetimes.\nI even believe there is another planet like ours out there somewhere.\n\nWe would be very naive to think we are the only intelligent planet in the entire Universe.
51857
There is a chance that there is life not on earth, but think about the perfect conditions for life that earth has: the perfect temperatures, the correct mixture of oxygen and other gases, and of course, water. If there were life not on earth, it would probally be 1-celled organisms, and not what we would expect.
383399
A recent scientific study estimates that there are AT LEAST 70-sextillion stars in the universe, one of which is of course are own sun. The odds AGAINST none of those other stars having planets occupied by sentient life are astronomical (pun intended). Undoubtedly of all the life forms that exist in the universe some are technologically at the same level as we are, while others are at least several thousand years ahead of us. Still others might be where we were 3-million years ago---just down from the trees. Certainly, any alien life with any intelligence at all must wonder if there are other life forms somewhere other than their own world.
328025
Absolutely! The odds that they exist are overwhelming when you think of how GALAXIES are scattered like specks of dust!\nNow... even though aliens exist, what are the odds that they are on another planet in our galaxy right NOW? Think about it... It took 50 million years for humans to appear on Earth. How long will we be here?... only 50 to 100 thousand years (hopefully)? How many other planets will bring forth intelligent life - not a whole heck of a lot. And of them, when will that life be around? Just a tiny amount of relative time.\n...What I am saying is that EVEN IF other civilizations were, are, or will be... the timeline of the universe is too insanely long for any of us to be co-existing. The reality may very well be that we are currently very alone here in our time and place. I hope this gives you a new, more realistic way of seeing things. Sorry it's such a downer, though!
373470
Yes, but not intelligent extraterrestrial life.  At least, not intelligent AND dextrous, and therefore incapable of interstellar travel and communication.\n\nFor example, besides humans, Earth is host to dolphins and whales, both mammals of high and - some would argue - superior intelligence to humans.  But you don't see dolphins or whales building space stations, sending probes throughout the solar system, or producing and watching "American Idol".\n\nI think it's the same on other planets - and only a few, if that.  If there's intelligent life, it's probably stuck where it is, like dolphins and whales are stuck here ("Star Trek IV" notwithstanding).
1067842
Using mathematics to determine the chances of life elsewhere in the universe, one estimate determines that there are approximately 10^75 advanced societies.  If true, then it is very likely that there is life beyond earth – even advanced life forms.
226998
I think so.  Given the probable number of other planets (nearly infinite), it defies logic to think that Earth is the *only* place in the universe that life developed.\n\nI have not had any contact with extraterrestrials myself, however, so I am not speaking from personal experience.\n\nEdit 3/16\nAfter posting my answer, I watched a show on the History Channel about Meteors.  One of the things the show presented was a meteorite that is believed to have come from Mars and *may* have signs of fossils embedded in the rock, fossils of living organisms -- bacteria.  The meteor is called ALH 84001.  Here is a website about it:\n\nhttp://www.lpi.usra.edu/lpi/meteorites/life.html
1071064
Absolutely not and I think it would be incredibly arrogant of us to think we are the only life in the entire universe, considering how many billions of planets, if not galaxies, there are.  There are more that can sustain life.
234059
Of course there is.  You would have to be crazy to think we're the only ones in the universe and the parallel universes, and so on.  They found rust on Mars, which means there was water - therefore leading to the conclusion of life on Mars.  If there was life on Mars, you better believe there's some kind of lifeform billions and trillions of light years away.  No life was discovered yet because we haven't built rockets that are capable of taking us to the destinations of where we haven't discovered yet.
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.
728914
We don't know for sure, but probably there is.  \n\nScientifically, think about it.  If there is a .001% (a random low number) chance of life living in a solar system, and .001% chance of life on a planet in the solar system, and a .001% chance of the life being intelligent, the chances are really good.\n\nIf the universe is unlimited in size, then then these figures will mount up and eventually the probably will get to 100% that intellegent life exists somewhere.  \n\nLet me clearify: you can say that if a galaxy has 10 planets and there is a .001% chance of life existing in that one galaxy, there's a .01% chance of life existing there.  However, the universe (as far as we know) is unlimited in size.  There is an unlimited amount of planets in the universe, therefore, you can speculate that there is a 100% chance of life existing in outer space (because there are unlimited number of planets).  I think that I clearified it, if not let me know.  ownager@sbcglobal.net
666417
Probably not.  That doesn't mean that we are the only life forms in the universe.  It only means that the probability that these life forms advanced to intelligent life, and have developed the technology to visit us is pretty slim.  Life on earth as we know it could be destroyed by a single meteor.
21383
I once read a theory that the universe is so big, that there's a chance that not only is there another earth somewhere, but there's probably so many that there's bound to be one exactly like ours.  The universe is huge beyond our present ability to comprehend, and it would be highly ignorant to think that with all the building blocks of life floating around out there that life doesn't exist somewhere else.  Whether we ever find it or not is another question.
306121
I would like to say that there is intelligent life in the universe besides on Earth.  Humans have gone from believing that the Earth was at the centre of all existence and the Sun and all "heavenly bodies" revolved around it, because from our Point of View it seemed that way.  Then we discovered that no, the Earth actually goes around the Sun, and there were other planets...and other suns...and other planets around other suns!! And so on.  \n\nSo why wouldn't this 'decentralising' process extend to the existence of life?  I like to think it gives us an appreciation that life itself is a natural, universal process that, where the conditions are right, would happen throughout the universe.  "Intelligent" life is a bit curlier to argue.  If intelligent life was a natural process, why have we not had communication with aliens?  We could assume they are as curious as humans are to seek life elsewhere, and humans have been sending signals into space for decades.  I cannot answer this; even if it does exist numerous places in the universe, the vastness of space may be just too great.  \n\nThe idea of intelligent life elsewhere appeals to me as it knocks us humans off our high horse, and our presumptuous and arrogant viewpoint that we are privileged with our intelligence (and yes, humans are intelligent, although one wonders sometimes).