Official disclosure of extraterrestrial life?
I disagree. There is pretty much nothing on other planets. They are barren and the environments are too harsh for living on. Also carbon based life forms are some of the easiest to make and are pretty good for biochemical reactions. Other elements which may support life just are either too reactive or inert to do anything, such as forming long chain molecules etc.DoNotDelete wrote:Again, only based on life as we know it.Leoj wrote:When searching for Extra-Terrestrial life, we are generally looking for planets that are Earth-like. Meaning they are a certain distance out from their star as well as other factors. Basically the planet has to be in the habitable zone. The problem with finding these planets though is that planets are very small and dark compared to the bright star, and that when looking into space its a lot easier to see a star than the small planets revolving around it, especially ones that are close enough so its not too cold but also far enough away so that its not too hot either. Basically we need more and more accurate ways to find planets, and I believe they are in the process of making a satellite and launching it called Kepler whose sole purpose is to look for Earth-like planets.
Would life on another planet look similar to that of Earth? Maybe. I mean it could be completely different. They could all be Reptilian like the Earth was before the giant Meteor took out the Dinosaurs, who knows if they would even be intelligent. Most likely they will be carbon based though.
There are possibilities for life to form in environments that are inhospitable to us. Gas giants, frozen moons, meteor fields, even stars themselves may be capable of supporting life - just not carbon-based life.
Anywhere a chemical reaction takes place releasing energy, there's potential for something 'living' to take advantage of that energy.
It's too easy to think the way our bodies have come to function is the only way life can exist, that's just too closed-minded in my opinion.
Water needing to be available also is pretty given in that the environment it creates helps to form the complicated carbon molecules life can arise from.
As for the location of the planet within the habitable zone. Well, it needs to have a star that is not too big or the star may die before life can evolve to a higher state.(remember the Sun is about 4.5-5 billion years old and life on Earth has only been around for about 3-4 billion years as we know it, the sun is also halfway through its life as a main sequence star). Smaller stars require the planet to be very close to the star and thus could tidal lock it (such as the moon is to the earth) meaning that the same side of the planet ALWAYS faces the star. The rotation of the planet is locked with the orbit to the star so that it looks like it never rotates from the planets point of view, meaning that one side would always be super hot and one side would always be super cold.
Last edited by Leoj on Sat Nov 07, 2009 6:23 pm, edited 1 time in total.
Imagination is more important than knowledge.
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- Miss Starseed
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We already have life forms on Earth that can survive without any or very little oxygen, survive temperatures that would kill almost all other kinds of life, and reproduce without the need of a mate. o it really isn't a stretch of the imagination for me to think alien life might not be very human-like.

- DoNotDelete
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Rock eating bacteria.
Don't pretend like you knew anything could actually eat rocks.
Extremophile bacteria can survive boiling temperatures, among other things.
Don't pretend like you knew that either.
So yeah, maybe there's even more amazing creatures out there in the depths of space.
Astrobiology is where it's at.
Don't pretend like you knew anything could actually eat rocks.
Extremophile bacteria can survive boiling temperatures, among other things.
Don't pretend like you knew that either.
So yeah, maybe there's even more amazing creatures out there in the depths of space.
Yeah baby.Wikipedia wrote:Extremophiles and astrobiology
Astrobiology is the field concerned with forming theories, such as panspermia, about the distribution, nature, and future of life in the universe. In it, microbial ecologists, astronomers, planetary scientists, geochemists, philosophers, and explorers cooperate constructively to guide the search for life on other planets. Astrobiologists are particularly interested in studying extremophiles, as many organisms of this type are capable of surviving in environments similar to those known to exist on other planets. For example, Mars may have regions in its deep subsurface permafrost that could harbor endolith communities. The subsurface water ocean of Jupiter's moon Europa may harbor life, especially at hypothesized hydrothermal vents at the ocean floor.
Astrobiology is where it's at.
Last edited by DoNotDelete on Sat Nov 07, 2009 8:06 pm, edited 3 times in total.
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Well actually yes, I did know that.DoNotDelete wrote:
Extremophile bacteria can survive boiling temperatures, among other things.
Don't pretend like you knew that either.
Known it for quite a while now, as a matter of fact.

- DoNotDelete
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I was just being theatrical.


Last edited by DoNotDelete on Sat Nov 07, 2009 8:17 pm, edited 1 time in total.
- The Idiotic Oracle
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the Waterbear can survive in the vacuum of outer space.Miss StarSeed wrote:We already have life forms on Earth that can survive without any or very little oxygen, survive temperatures that would kill almost all other kinds of life, and reproduce without the need of a mate. o it really isn't a stretch of the imagination for me to think alien life might not be very human-like.
BEAT THAT
YEEAAAH

- Mr. Mander
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Pics or it didn't happenThe Idiotic Oracle wrote:the Waterbear can survive in the vacuum of outer space.Miss StarSeed wrote:We already have life forms on Earth that can survive without any or very little oxygen, survive temperatures that would kill almost all other kinds of life, and reproduce without the need of a mate. o it really isn't a stretch of the imagination for me to think alien life might not be very human-like.
BEAT THAT
YEEAAAH
- The Idiotic Oracle
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it was on Animal Planet, on that most extreme top ten show, about survivors.Fauche wrote:Pics or it didn't happenThe Idiotic Oracle wrote:the Waterbear can survive in the vacuum of outer space.Miss StarSeed wrote:We already have life forms on Earth that can survive without any or very little oxygen, survive temperatures that would kill almost all other kinds of life, and reproduce without the need of a mate. o it really isn't a stretch of the imagination for me to think alien life might not be very human-like.
BEAT THAT
YEEAAAH



- DoNotDelete
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