Life on other Worlds?

Started by Ultraviolence July 28th, 2009 2:26 AM
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Ultraviolence

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Some of you might know that my favorite to study is Astrology and Planetery Pysics[sp?]. So I have come to a point where I wonder, 'Is there life on other planets?'. I already know that Mars used, or could have, harboured some form of primitive life, but how it lost that is a tad complicated. I also know that in our solar system, there are 3 moons that could be hiding life, Jupitier's moon, Europa (vast ocean under frozen ice surface?), Saturn's moon, Echlades (Water under surface) and another of Saturn's, Titan (Thick atmosphere, similar to ours, could have water on surface).

And what about out our Solar System? Serveral planets have been found in other Galaxys, and in our galaxy, the Milky Way.

For life to survive on a planet, it needs a good atmosphere, mainly Oxygen and Nitrogen, water and the Planet needs to be Geologically active.

So, what do you guys think? This was NOT taken from an on-line source, nor a book.
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I believe in life on other planets.
I mean, the universe is an infinitely expanding mass of unknown matters, and infinite galaxies.
There isn't a possibility that there is not any life, or even, intelligent life, on another planet somewhere in the void we call the universe.
The cosmos can be a complicated, mysterious place, and still is, but it is my hope to one day travel to around the solar system, or even more!
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Age 28
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I believe there is plenty of life on different planets. My self being interested in astronomy know that there are thousands and thousands of galaxies and that a possible thousand planets just like ours. So since we are not going to be able to travel to any of these galaxies any times soon, it’s up to you to make up your mind. But I personally think there are thousands of races just like ours, maybe smarter maybe not. The rest is from your imagination to figure out.
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LethalTexture

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It is impossible for there NOT to be other life on other planets, systems and galaxies. As has been said, the universe is an almost infinite expanse of area that could hold life, and for this planet to be the only one in said expanse is nigh on impossible.

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Cherrim

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I definitely think there's life out there. Whether it's "intelligent" or not, I'm not sure, but I find it absolutely absurd to think that in an expanding "infinite" universe, we're the only planet with life.

Do I think we'll meet/communicate with life from other planets? No, probably not. Not for a looooong time anyway.


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Life on other planets is possible.
Earth is not just some "accident" that ended up with life.

In fact, there is evidence that we were visted by aliens hundreds on hundreds of years back.
(It's actually quite interesting if you don't know what I'm talking about, I suggest you search it up.)
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There's no other life elsewhere until proven otherwise. Based on our information at hand, there still may yet be a planet full of staphylococci and Munchlax.

This could be about a year and a half old now, but there was an article on CNN (possibly linked elsewhere) where scientists found a planet that could be hospitable to life (nothing unusual)...but, as usual, it had some sort of additional chemical issue. It's been too long to recall, but the point is why speculate? Sure, there might be, and there also might not be. It's a wild goose chase that has no potential to get anywhere. Giving the final frontier any thoughts altogether is ridiculous. let's say the moon is hospitable all of a sudden because the seas became, well, seas and it gained an air bubble around it. Wonderful, who's going to take the risky ride up there and then the even more risky reentry? The average person is not foolish enough to forfeit their lives like that. There's no point to any of this. You're better off researching literature.
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Yamikarasu

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Life doesn't even need an abundance of oxygen to survive. When the first life appeared on the planet, the atmosphere was mostly CO2 (or something, I just know it wasn't oxygen) and then because of chemical reactions within those early life forms the atmosphere turned into the mostly nitrogen and oxygen mix we have today. The term "life" is pretty vague, and leaves a lot of room for different types of life forms that live under completely different conditions.

One thing we know life like us needs is water, because water allows many different chemical reactions to take place without interference, and it also somewhat protects life from natural processes that would otherwise be destructive (UV rays, etc.). We assume most life is carbon based because carbon can bond with other elements in many life-friendly combinations. An alternative to carbon might be silicon, which would allow life to withstand much hotter temperatures, but isn't as versatile as carbon.

By the way: no, we have not been visited by aliens, unless they can travel faster than light.

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Ultraviolence

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Posted May 3rd, 2015
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To understand alien visits, you need to understand light speed. For example, if a planet 300 million light years away looked at our planet, they would see dinosaurs.
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.Seth

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I believe there's life on other worlds. As Lightning said, whether they're intelligent or not, we don't know. I believe that Earth might be visited by intergalactic life forms.
Hey, there's a good bit of evidence on UFO's, so something has to be flying them. :\

It makes a bit of sense, if you think about it.

Neutrino

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Posted March 28th, 2010
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Of course there's life on other planets. To those skeptics, it's perfectly plausible for a person to beleive that, since they have not seen it, it is not real. However, it's perfectly unplausible for a person to think that Earth is the only planet with life. Earth is, to all intents and purposes, one planet, out of countless many others. We have all our machines and such, which correspond to our theories, and our laws of physics, then again, our laws are based out our planetary conditions.

The Universe will have ideas of it's own. There will be other forms of life, because they will have different anatomies to us. They will be able to survive in conditions that we can't. Just because organisms on our planet wont be able to live/survive without mechanical aid on other planets - because it's too hot/cold, et cetera - doesn't mean that other forms of alien life wont.

We are not the most advanced race. Our machines can only calculate on our knowledge, and there's nothing to say that our laws of physics are the indefinate, and that they stand only as corresponding to our planet. They do not count on other planets, and, as such, there will be other forms of life, jsut because our machines say that life can't, doesn't mean that they can't. Our machiens aren't the final word. The Universe has ideas of it's own.

Just think: Aliens form another planet will probably be stating that life on our planet is impossible, because our planetary conditions contradict what they deem as conditions able to hold life, because their anatomies are used to a different climate. It's exactly the same.

And our machiens aren't god, anyway. There may well be life on mars, jupiter, saturn, whatever. Our machines just probably can't pick it up. Heck, we're not exactly superadvanced, are we?

In short, yes, there is alien life. :D

.little monster

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Posted March 23rd, 2015
4,291 posts
14 Years
There's no other life elsewhere until proven otherwise. Based on our information at hand, there still may yet be a planet full of staphylococci and Munchlax.

This could be about a year and a half old now, but there was an article on CNN (possibly linked elsewhere) where scientists found a planet that could be hospitable to life (nothing unusual)...but, as usual, it had some sort of additional chemical issue. It's been too long to recall, but the point is why speculate? Sure, there might be, and there also might not be. It's a wild goose chase that has no potential to get anywhere. Giving the final frontier any thoughts altogether is ridiculous. let's say the moon is hospitable all of a sudden because the seas became, well, seas and it gained an air bubble around it. Wonderful, who's going to take the risky ride up there and then the even more risky reentry? The average person is not foolish enough to forfeit their lives like that. There's no point to any of this. You're better off researching literature.
Just because you don't know of it, that doesn't mean it is non-existent.

I don't know you, I guess you don't exist.
Actually, there are microscopic things on mars.
Never proven.
If there is no life beyond our planet, it is an incredible waste of space.
...


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I believe there is life on other planets. I believe it is impossible for there not to be. Space is too fast, you also have to do the math for the approximate number of Earth-like planets.

The Scientist

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Posted December 19th, 2009
721 posts
19.3 Years
The original Drake equation:


Can be rewritten as


N is the number of civilizations in our galaxy in which communication might be possible
N* is the current number of stars in the galaxy
R* is the average rate of star formation per year in our galaxy
fp is the fraction of those stars that have planets
ne is the average number of planets that can potentially support life per star that has planets
fℓ is the fraction of the above that actually go on to develop life at some point
fi is the fraction of the above that actually go on to develop intelligent life
fc is the fraction of civilizations that develop a technology that releases detectable signs of their existence into space
L is the length of time such civilizations release detectable signals into space.

There are other factors involved, such as reappearance and messaging variables, but in short, the equation currently states that there is extraterrestrial life. They may not be broadcasting radio waves yet, they may not even be multicellular. But even Mars has fossilized microbes, and that's practically next door.
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I believe I saw this documentary where they discovered a very simple jellyfish like creature in the oceans of Neptune, but they weren't intelligence and they were nearly microscopic and 98% water.

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mike182

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i think its possible that there could have/will be life on other planets
if there WAS life on other planets it probably occurred similarly to earth but there may not have been enough water, oxygen, etc. to support that life

and this is just my idea i could (and probly am) be totally wrong
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