Wow! It would be nice to know how the relative numbers play out, and whether the argument goes anywhere.
As a piece of related evidence, it seems that Earth-like rocky planets were appearing much earlier in the universe than previously thought. This article suggests they started showing up 12-13 billion years ago, not long after the first stars.
Wow! It would be nice to know how the relative numbers play out, and whether the argument goes anywhere.
As a piece of related evidence, it seems that Earth-like rocky planets were appearing much earlier in the universe than previously thought. This article suggests they started showing up 12-13 billion years ago, not long after the first stars.