is it life outside earth????
599329
A resounding YES! The reason we haven't met them is quite obvious, really. The incidents of life as we know it are so far apart that it would take more time for them to reach us or for us to reach them than any given life form in the universe has. In other words, we will all die and all trace of our existance will be long gone by the time any other beings got here. Take it from an alien!
268872
Certainly.  While life of any sort is unlikely to be found in our solar system (at least beyond the possible existance of bacteria or bacterial fossils) the universe is simply too large for life to not occur somewhere else.\n\nAssuming that life on earth formed and evolved from the basic chemicals of a primordial earth into molecules, and the single celled organisms, it is entirely possible that this could happen somewhere else.  As was previously mentioned, there are a huge amount of stars in the universe, all of which may hold the potential to support a solar system with planets and create conditions likely to that of the Earth 4.5 billion years ago.  Even with a low frequency (1 in billions or more) of any sort of life-form formation, this means what there would likely be life in many places throughout the universe.\n\nI believe that experiments have been performed simulating the primordial chemical environment of the Earth, and subjecting it to electric discharge as would be released by lightning.  It was found that simple compounds such as amino acids could be formed from these reactions, and thus the formation of life may be viewed as a statistical event with a decent probability of occurance, given the correct conditions.\n\nWhile the chance of life existing is significant, the chance of it being intelligent interacting life-forms that we are able to find is much lower.  Even traveling at the fastest speed possible (speed of light), which has never been close to attained for human flight, it would take 15 billion years to reach the outskirts of the universe.  Assuming that life may undergo cycles in which a life-form may evolve, deplete a planet's resources, and then die out, the window of opportunity for finding any life form may be small.  Additionally, since prospective planets to explore that may contain life are likely identified by telescopes, the telescopes show what the planet was like in the past due to the time it takes the light to travel to the Earth.  If we are looking at a planet that is 5 billion light years away, we are looking at the light that was sent from that planet 5 billion years ago.\n\nWhile there are many formidable obstacles, it is not altogether impossible for us to find life on other planets, but I doubt that any of us will see it in our lifetimes.
1132699
Well.. \nI'm more scientific than religious in this matter. \nThe reason Earth has life is because of the certain climate, temperature, etc. which is perfect for life. \nHowever, there are always news stories about "possible life on mars" and as such. And I believe that for life to form, there needs to be a certain set conditions which allow life to be formed and which support and maintain it. \n\nTherefore,  most definitely there could have been life in other planets, maybe some organisms or something else which is suited to that planet's climate, temp. and etc. It could be that we either can not detect that life on the other planets or the planet is undergoing some sort of climatic change which does not support life due to variant pressures. \n\nDid god stop at Earth-- well, that is a question which is a matter of belief- if we consider god as a positive force which stimulates life- then no, god wouldn't have stopped only on Earth. \n\nSome research even claims that there are other solar systems with other stars (like our Sun) in which a planet is very like Earth- almost same which supports life. \n\nSo, whether life is or not- is a personal decision. I think there is- but as you say, there is no real solid evidence supporting or contradicting existence of life in other planets
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.
47051
not in our solar system. \nBut you also have to remember that even if there is life on other planets, we are assuming that they are as advance as we are or more. Could it be that maybe they are in a pre-industrial era and have no means of space exploration?
168541
The short answer is: \n- - - - - - - - - - - \n\nYes I think it is fairly likely that there is life someplace outside our solar system. I have written a short historical survey, and then summarized some of the reasons behind my answer. They boil down to 2 points:\n\n1. The universe is a big place\n2. Life seems to be pretty common here on earth and start pretty easily. \n\nThe Long answer:\n- - - - - - - - - - - \n\nA. History\n- - - - - - - \n\nThis is a question that people have asked for a long time. The Greek philospher Epicurius (341–270 B.C) speculated that there were an infinite number of other planets like earth, with life on them, in the universe:\n\n“There are infinite worlds both like and unlike this world of ours...We must believe that in all worlds there are living creatures and planets and other things we see in this world.” Epicurius (c. 300 B.C)\n\nThe Dominican Monk and philospher Giodarno Bruno conjected in his 1584 work, "On the Infinite Universe and Worlds", that there were an infinite number of other worlds with intelligent life on them. He refused to recant this and other controversial beliefs, and was burned at the stake during the Inquisition for this. \n\nThe famous physicist Enrico Fermi formulated the Fermi Paradox (sometimes known as the Fermi Principle by skeptics), which states that if advanced intelligent life was widespread in the universe, we would have evidence of it already. Since we do not have good evidence, where are they? \n\nThis was later addressed by Frank Drake with his Drake equation (aka the Sagan equation or the Green Bank equation) for trying to estimate the probability of using coming in contact with an advanced extraterrestrial civilization. \n\nBoth a modification of the Drake Equation and the analyses associated with the Fermi Paradox can be used to try to estimate the likelihood of there being life beyond our solar system (the interested reader is directed to the references). Basically, depending on what is assumed for a number of parameters, it appears either quite likely that there is life outside the solar system, or quite unlikely. However, at least one has a better handle on what the quantitative factors are that go into estimating this probability by this kind of investigation. \n\n\nB. Reasoning Behind my Opinion\n- - - - - - - - - - - - - - - - - - - - -\n\n\nMy own opinion, after having read this material and some of the links contained, is that it is quite possible that life exists beyond our solar system, or even possibly does or has in other places in our solar system than earth. \n\nFirst, consider the very large number of stars even in our own galaxy (200-400 billion) and the large number of visible galaxies. This leads to about 7x10^22 stars in the visible universe (according to  Dr Simon Driver of ANU). This is more than 10 times the number of grains of sand on earth. This is 100 billion times more than the number of letters in the 14 million books in the Library of Congress. If this is coupled with the seeming presence of a large number of exoplanets around these stars (170 found as of the end of 2005, and we have barely started looking), then this translates into a HUGE number of planets. With this extremely large number of potential planets, there are bound to be some like earth. \n\nLife seems to thrive readily, since life started soon after the earth cooled and existing in environments that we can barely imagine, like miles underground, or near deep ocean vents, or under the Antarctic ice. It has been well known for years that there are amino acids, the building blocks of life on meteors in space. Scientists have also created amino acids in environments similar to deep space environments (see reference). The Miller-Urey experiments in the 1950s were also able to readily create amino acids in environments meant to duplicate a primordial earth environment (reference below). \n\nWith the evidence that there are probably many planets with eart
427364
there hasn't been any found yet.... but... the possibility of life on other planets is very  high....  :)
835853
I assume you mean life on another planet since you can see the microscopic life here on Earth with a microscope, which is pretty good proof.\n\nThere is some disputed evidence of fossilized microbes in a meteorite that originated on Mars. Nothing more than that though.
652075
is it from this planet itself?
13099
I DONT THINK THAT WE R  ALONE . WE HAVE SEEN A FEW SIGNS OF XTRA TERRESTRIAL LIFE AND IT  IS POSSIBLE THAT THERE ARE OTHER LIVING ORGANISMS INHABITED PLANETS
1123060
Maybe somewhere, we will probably never know! There is a high chance that in another galaxy though that there is another inhabitable planet similar to earth with life living on it, i cant believe that it has only happened to one planet in one galaxy in all of space! That would just be madness!
749528
On the other side of Earth
404059
There is alien  life. Perhaps not in our solar system but definately out there.\nNow this life could be simple microbes or anything like that.\nIntelligent life may be out there too, it all depends on how things developed after the big bang. There   MUST Be intelligent life out there.. There's none here!!!
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!
306692
of course. As long there is a living thing outside space, they r aliens. The possibility is low but the no. of planet is almost infinity so the possibility increases.
184609
I do think there is a very good chance, statistically, that life exists on other planets. As I stated in a question very similar to this one, comets contain organic-like compounds that could be the building blocks for life, and such comets travel among two or maybe even more stars in a galaxy (interstellar comets).\n\nAs for watching us from above; the only things watching us from above are birds, flying insects, stuff in trees if you happen to be under a tree, people in skyscrapers if you are below a skyscraper, people in aeroplanes, satellites with Earth-directed sensors, etc.\n\nDeities, aliens and Jesus (which all may be one and the same) are probably not watching us from above or at all because they probably don't exist and if they do they probably have not discovered us yet because most complex forms of life on Earth are young relative to cosmic distances (which are measured in time). But it's as false for me to say "I know for a fact that aliens aren't watching us" as it is for anyone else to say "I know for a fact that aliens are watching us".
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.