by ClakarEQ » Mon Jul 16, 2007 8:22 am
Not that related but last night they had a good show on discovery about our planet and it's aprox 4 billion age and the amount of water we have here.
The question was one I hadn't seen here and was surprised by that.
How did such a huge amount of water get on earth in the first place?
Science does not know. They've tried a few things, samplings from comets, carbon dating meteorites, etc.
The current "best guess" is that water was placed here by comets, and the comets that did it came from the asteroid belt. The belt is full of not just "rocks" but comets as well.
I don't get the "big deal" on finding water on bodies outside our solar system, this isn't much of big news IMHO.