Originally Posted by
Darknes
http:///forum/post/2487631
Naive? Yes, there are billions of galaxies in the universe, and within each of these are billions of stars. Billions x Billions of possibilities. Still, the chance of one supporting life is next to zero.
You have to have a planet with the right size star that isn't too active spewing off lots of radiation
The planet has to be just the right distance from the sun so it's not too hot or cold
The planet must rotate so that the sun doesn't torch one side
The planet must have the correct atmosphere to both block out harmful radiation from the sun but also hold in moisture
The planet must be plentiful in water and other elements necessary for life
etc.
etc.
These are just a few of the many necessary conditions for the simplest lifeforms. Now, for a planet to have an evolved lifeform this planet must be stable for billions of years and must sustain a multitude of other conditions for evolved species.
I'm not saying that it's not possible, but I'm not keeping my hopes up. I'm not being naive, I'm being reasonable.
even if the chances are 1 in a gazillion that would mean there are more then likely millions of suitable planets out there..
We know for a fact it happened once, cant be to hard to assume it may have happened twice .