alt Hacker NewsThat's not that early, no? There was probably enough C, H, N, O, P, S, Na atoms for life to start 10B years ago. You probably couldnt rely on iron being everywhere though but that's not such a hard requirement.
That's not that early, no? There was probably enough C, H, N, O, P, S, Na atoms for life to start 10B years ago. You probably couldnt rely on iron being everywhere though but that's not such a hard requirement.
It's fascinating to ponder, for sure.
The universe still has plenty of time to burn, especially red dwarfs. It's sad to think about starless skies, though.
The heme is pretty magical. Probably not a hard requirement, but it sure has been useful for us here.