Lets put it this way.
How many stars are there in the sky. if we take 1% of these and say they are suns then 1% and say they have a solar system then 1% and say that they have a system like ours then 1% and say they have a planet with water then 1% and say it can support life then 1% and say it does support life then 1% and say it is intelligent life you still have more planets then you can see by standing still now say there are aliens.
As for seeing them that is up to you If I say I have then you say I am mad if I say I have not then you say why there is no answer
2006-10-28 23:53:52
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answer #1
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answered by FlyingPm 2
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No.
You specifically sate 'aliens FROM outer space', implying they have come from outer space and are here on Earth.
There is not one iota of credible evidence for that, at all. And when you acquire an understanding of the vast problems of interstellar travel, you appreciate how very unlikely, verging on the impossible, it is that they ever could visit us.
It is a completely different question from 'do you believe there is life on other planets?' There almost certainly is. Richard Dawkins points out that life is very hard to create and sustain, requiring 'Goldilocks' planets that are not too hot, not too cold, tectonically and orbitally stable etc etc. But even if you reckon that only one in a Billion planets could give rise to life, that would mean there are about a Billion inhabited worlds in the observable universe.
That sounds enormous, but such worlds would be scattered thinly. Like the lands where jumbilies live, Aliens are Far and Few, Far and Few!
2006-10-28 23:59:04
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answer #2
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answered by Avondrow 7
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nicely, there are greater or less 10^40 4 stars obtainable, and the situations for existence to realize at the instant are not impossible so opportunities probably are in some unspecified time sooner or later, someplace, existence will evolve around yet another. although, there are some different factors to contemplate: one million- The situations mandatory for existence are nevertheless very difficult to realize, so that's notably unlikely that the different existence will evolve everywhere close to earth. 2- For quite a few billion years, all existence in the worldwide replace into microbial. maximum different existence may well be microbial as nicely, and not very exciting. 3- whether complicated existence arises, this would not mean intelligence. only a blend of environmental factors carry approximately us- it would be fullyyt possible for a planet to circulate via its entire lifespan without sensible existence bobbing up. So whether intelligence does arise, that is probably going to realize this a protracted way far off from here, so we just about rather won't see any for a protracted time.
2016-10-16 12:38:38
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answer #3
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answered by lurette 4
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So far we've seen no verifiable evidence of other sentient species. That said, I believe with some certainty that somewhere in our galaxy at some past, present, or future time, a sentient species did/does/will exist.
Why haven't we heard from them?
Perhaps they are not technologically advanced to be heard. They may be mastering stone knives right now, or experiencing their own Rennaisance.
Perhaps they are here right now. Any species sufficiently advanced to travel interstellar distances would be able to hide or masquerade with ease. That Boeing 737 that flew by may be a surveillance craft.
Perhaps they are so far away they will never notice us and vice versa.
Perhaps they existed a million years ago and died out.
Perhaps they will exist a million years from now.
It is really impossible to know for sure.
The Drake Equation suggests that there is sentient life out there. The Fermi Paradox casts doubt. Play around with the calculation form at the second link and see what you think.
2006-10-29 03:55:31
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answer #4
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answered by Otis F 7
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Hell, even if the chances of intelligent life were one in a quadrillion, there should still be much intelligent life in this universe :)
However, I figure our assumptions of this amazingly rare life are rather naive. It is likely much less rare than we are led by some to believe.
It seems the more we learn about the cosmos the more we begin to recognize that we really don't seem to be that special as a planet on a cosmic scale. There are millions of solar systems in this galaxy. Our galaxy is in no way special; those 500 billion or so other galaxies we can actually see are really just the same thing.
Some assume because in only a few decades of searching we have not made contact that life is amazingly rare. Good try. Too bad we havn't even checked 0.0001% of the solar systems in our galaxy alone.
2006-10-29 01:45:11
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answer #5
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answered by Anonymous
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As Douglas Adams wrote in The Hitchikers Guide to the Galaxy "Space is big really big, and for all you primative life forms the trick is to keep banging the rocks together"
To visit other star systems we need a technology that hasn't been invented yet or aliens need the same technology. We need to be able to travel to the stars and arrive within a couple of years. Such technology we do not have nor do we know how to construct it.
Sometimes the planet Venus is refered to as the Earth's Sister.
2006-10-29 01:09:51
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answer #6
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answered by Anonymous
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We exist. Over the centuries, your planet was a curious place to visit once or twice and was not considered very interesting . Sure, your wars showed us how undeveloped you are as a species. Your infantile,(in cosmic terms) dependence on god concepts does not bode well for you and neither does your penchant to breed beyond your planet's ability to sustain you. We are now showing an interest in you because it is not often that we get to observe a species commit suicide. You are so close to maturing as a sentient species and it will be a shame to see you kill yourselves. There are just not enough of you becoming rational enough to force the issue. You let the least among you determine your fate, so be it.
2006-10-29 01:00:52
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answer #7
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answered by iknowtruthismine 7
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Maybe not from out of space, but very likely from other planets.
As "Life" is essentially a piece of code (organic computer program), then the odds of life on other planets is very high.
2006-10-28 23:59:30
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answer #8
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answered by Anonymous
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In an infinite universe there are infinite possibilities. It's not unreasonable to think there is other life out there. Just because we haven't met any yet (as a species, not individuals) doesn't mean they don't exist.
2006-10-28 23:51:59
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answer #9
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answered by Graham L 4
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As the new thinkers in the world of physicists and cosmologists seem to have decided that there are at least several parallel universes aside from ours, it would be illogical and egotistical to assume that ours is the only planet that supports life.
Have they visited our Earth? I hope not for their sakes. I suspect it would sadden them.
2006-10-29 00:01:58
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answer #10
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answered by Christine H 7
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