As Carl Sagan in all his wisdom used to say:
"There are billions and billions of stars (suns) in the universe, each one with the possibility of having Earth-like orbiting planets able to support life."
There's absolutely NO DOUBT that life exists on other planets, we just haven't located them yet...
(although, perhaps THEY have already located US).
For all you Carl Sagan fans....
listen to the man and the "Pale Blue Dot":
http://content421.clipmarks.com/content/29125E7A-391F-44D6-A9FD-140AC9DD29DE/
2007-06-02 12:03:30
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answer #1
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answered by GeneL 7
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LIFE ELSEWHERE. Listen carefully. Perhaps Mars might not have life currently, but there is strong evidence that Mars was once full of liquid water. Also, since Mars resides in the GOldilocks conditions along with Earth, it is very much possible that life could have spawned there. Not only that, but Europa, Jupiter's moon, is predicted to have water over the entire surface underneath the icy crust. Earth's oceans were the first areas to inhabit life. The building blocks of life are nucleic acids, protein, carbohydrates, and lipids. Scientists have manually forged each of these things without the use of any living thing. If these things cac be produced by humans, then they can easily be created by nature. Titan, Saturn's moon, seems to have the same condition that the Early Earth did while it was being formed. Titan is a lookback into our past. Perhaps in the future, Titan will turn into an Earth-like moon with continets and liquid water. Mars, Europa, and Titan are already three examples of possible r future life. Imagine every other star in the billions of stars in the Milky Way Galaxy. After that, imagine all the billions of Galaxies in the Universe. Scientists have recentky discovered two planets ouside our solar system that might be possible candidates for life. One of the planets revolves around a red giant star, but has goldilocks conditions and posible water. The other, Neptune sized planet that is made up of rock and metal, not gases, is predicted to be covered completely by water.
A mission to the moon revealed yet another surprise about how strong life is. Accidentally, something caused some microorginisms to grow on the surface of a probe that landed on the moon. After approximately a decade later, I think during the appolo missions, scientists discovered that those microorginisms actually reproduced, and had increased in number, even in the vaccum of space and the extreme weather on the moon
If one solar system can harness life, then most likely other solar systems can too. Scientists have concluded that even if microbial life is found in any other place in the solar system that was not tampered by humans (example of the microorginisms on the moon) than life is a common phenomenon in the Universe.
2007-06-02 19:46:14
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answer #2
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answered by Crystal 2
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Your question uses the word UNIVERSE but talks about our Solar System (the Sun and its nine planets with their moons).
In this sense, you are incorrect to say that life cannot exist elsewhere.
The term UNIVERSE means "everything that is out there", our sun and its planets and moons, all of the other stars, and their planets and moons, all of the other galaxies with all their stars, planets and moons. That is indeed huge, and that is the Universe. With all of those planets out there it is probable that on at least one (maybe more) some forms of life will develop, have developed, are developing, or developed and died as a result of some catastrophic event such as a collision with an asteroid, a major outbreak of disease, or gigantic quake.
Your question about how matter and space came into the picture is far to simplistic to respond to however. Whom do you suppose out there in average citizen land might have the answer for that??? Nobody was alive at the time to write all of those events down on paper for us. There is no vapor trail we can follow back 4 to 5 Billion Years into the past. Questions like this are futile and pointless in that there are no real answers, only supposition, guesses, theories, and baloney offered by the religious types.
2007-06-02 20:37:16
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answer #3
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answered by zahbudar 6
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By definition, no, because the universe encompasses all the space-time that exists. As for life outside the local solar system, the jury is out, and will be for some time; we know that there are planets, but little is known of their characteristics. Quantum mechanics has nothing directly to do with it; life is based on macroscopic chemistry. Considering that there are a billion trillion stars which could in principle have planets suitable for life, it is certainly possible that there is some.
2007-06-02 19:52:16
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answer #4
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answered by Anonymous
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OK, drop the quantum mechanics thing. First of all, it only applies on the scale of atoms. Secondly, it says no such thing.
Of course life can develop naturally. It took hold on Earth pretty much as soon as it could, and has flourished since. There's no reason to think that hasn't happened elsewhere. And I think the exobiologists probably know a bit more about it than you do. Look up the big bang and cosmic chemical evolution from there for a more complete picture.
2007-06-02 20:09:10
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answer #5
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answered by eri 7
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That life exists is obviously not in question, and since it exists here, in abundance, and in almost every kind of environment, and ALMOST regardless of temperature, it is almost certain that it exists on other planets. That life of some kind exists on a planet or planets within our own sun's system is rapidly becoming not only believable, but is expected! It just remains to be found! Once it has, then it will be accepted as proof that not just life, but highly advanced life, exists everywhere in our galaxy and the universe.
2007-06-02 19:07:48
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answer #6
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answered by Anonymous
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OK i don't understand the last part...but the question "do you believe there is life out there?" ABSOLUTELY! i just asked the same question...We are in the milky way galaxy...and that is just one galaxy inside the universe. Each star is said to be a sun..there are billions of stars! To think there is no life besides us would be foolish. Of course there is..I just hope one day before I'm dead..(and i know the chances of this are 1 to nothing) but I'm PRAYING that one day before i die we will discover other "Beings" out there. Maybe even someone gets to talk them. It's Weird though..because it all seems like a big fantasy after thinking about it..you know other life? but its real! And that's whats so fascinating...you can wonder and wonder about other lives being out there and not feel like an idiot because it's true! and I know there is life out there..But anyway I'm getting carried away and i am Way off topic.
2007-06-02 19:07:46
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answer #7
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answered by Anonymous
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Mars may have started to have life, but lost it when it lost it's atmosphere... most likely due to solar wind. Mars is too small to support a spinning core, so it has no protective magnetic field to stop the solar winds from stripping the atmosphere off to outerspace. So, there may have been earlier life, but, from what we've found, only single cell life. This was evidenced in the famous "Martian meteor" that had fosilized bacteria in it...
2007-06-02 20:19:34
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answer #8
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answered by Moose 4
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Outside of the Universe? I don't know. Depends on whether or not anything exists outside of the Universe.
2007-06-02 19:30:20
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answer #9
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answered by TheShankmaster 4
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Exobiologist. Interesting title since there is no proof that the subject exists. A branch of science that is all speculation!
2007-06-02 23:56:49
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answer #10
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answered by styx 2
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