Re: Snowball Earth
Hello,
Raul is right, a planets internal heat engine (the core radiating heat outward) is a key factor in the development of planets (ours and most likely others as well). I also hope there are other "earths" and am resigned to the fact that though there is no current evidence; due to the size of galaxies, and the enourmous amount of activity going on in the observable universe I cannot deny the odds of us being the only life form is quite small.
see ya VINCE