How effective is the search for planets like ours? Can they see them yet?
It seems to me the math is overwhelming. They are finding more and more planets, common little guys they are. Extrapolating, there is an infinite number of them. If something can happen, bigawd it will. And more than once.
I don't know if the planets discovered are representative of the totality. I think it's easier to see a gas giant than a rocky lump.
Arf