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Is there life in space?

10 Answers
my question: is there life in space?, please answer if you can, regards
E

While there is no evidence yet for life beyond our planet, it is interesting to note that amino acids (often called the building blocks of life) are quite common everywhere. Evidence of amino acids exist not just in our solar system, but are also found in the interstellar medium (dust between stars) and even in other galaxies.

One of NASA's primary goals is to search for life beyond Earth. The Keplar mission that went up a couple of years ago is a satellite that is searching for planets around nearby stars. SIM is a satellite NASA will launch in a few years, that will be able to search for Earth-like planets around nearby stars. This is a big step, because it is much easier to find a planet the size of Jupiter(318 earth masses) than it is to find a planet the size of Earth. The real test of life will come with the Terrestrial Planet Finder (TPF) , a mission that will probably launch around 2020.

TPF is designed to study the planets found by previous missions to a degree previously unheard of. TPF will be able to get a spectrum (intensity of emitted light across all wavelengths) of the extrasolar planet's atmosphere. The spectrum can tell us what the chemical composition of the atmosphere is, and this could give us our smoking gun for life. For example, if they found methane it would only suggest a possibility of life, because while we know that life here on Earth produces methane, we also know that many non-organic processes produce methane. However, if the spectrum shows ozone, we can almost say for certain that that planet has life. This is because ozone is produced by O2, which does not have any strong non-organic sources that we know of. In fact, ozone is easily destroyed in our atmosphere, so it needs a very strong source of oxygento continuously replace it. Earth itself only reached its current levels of oxygen after hundreds of millions of years of bacteria in the oceans emitting oxygen through photosynthesis.

So in summary, so far there is no evidence of life in space, but in ten years keep your eyes peeled for press releases from the Terrestrial Planet Finder.

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H

There`s got to be. Everywhere on earth we find water. It`s the source of life. And this is still limiting to the idea that all life needs water to survive. Even still, there are plenty on candidates for water in places other than earth. The frozen water on mars (still possible for liquid water somewhere as well), the frozen water on europa (and a possible massive global ocean underneath with who knows what), even frozen water on the moon could have some potential. And if water has no importance to other life forms, there are tons more possibilities. Titan with its methane cycle, Venus with it`s super hot atmosphere and even finding an oxygen atmosphere on Rhea. New discoveries are being discovered everyday.

Life as demonstrated on our own planet that it can take the harshest of climates. Volcanoes, dark cave rivers, deep in the ocean beside super hot vents and even in permafrost. I`m beginning to think of life having the potential to be anywhere there is energy being created.

Anyone who says there is no life other than the like on earth is extremely close minded. How are they the ones to say they have all the answers and they know everything there is to know. Space is a big place. When haven`t even grown the nail to scratch the surface of these discoveries yet. The only thing you can be sure about is that we are learning more and more everyday, and it is and can only become more and more.

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J

I'm convinced there is. Our galaxy alone, the Milky Way, is estimated to have over 100 billion stars.

It seems a little egotistical to think we live on the only planet capable of supporting some form of life. It wasn't that long ago, we thought Earth was the center of the universe.


Image courtesy of NASA and WikiMedia Commons.

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P

I think it would be arrogant of us to think that God created all the atmospheres, universes, planets, and stars, just so we could exist here on the earth.. So, yes, I think there is life in space, somewhere.

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G

I believe there is life in space.We get to hear rumors every day about the existence of aliens.There may be million of rumors but even one percent of it is true then there is life in space.

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H

People have seen and discovered things that mayhave hinted to there being life in space, but no one has proven it. There might be.

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M

I feel that there is life in space. I find it hard to believe that Earth is the only place in the universe that surtains life.

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A

The space is so big that we can never know if there is life there. Surely, there is another earth somewhere else.

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M

No one has discovered life in space so far.

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S

May be but we don't found it so far .

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