[ExI] RES: Double-Earth (Was: kepler study says 8.8e9 earthlike planets)

[Henrique Moraes Machado]

<Tomaz> The real problem might be, why the Earth is so dry? </Tomaz>


Correct me if I'm wrong but I think I've read somewhere that Earth's water
comes from comets and asteroids. And that Jupiter and Saturn attract most of
the comets and asteroids to themselves. Put the two together and then we end
up with tiny moon Europa having more than two times the water Earth has.