Kurzgesagt recently had an interesting video on how life might have been everywhere when the universe was still young and essentially every inch of it had tempe

Kurzgesagt recently had an interesting video on how life might have been everywhere when the universe was still young and essentially every inch of it had temperatures to support it. The bit that sold me on the idea was when they noted that the complexity of life seems to double every 250m years. But apparently if you roll with that assumption and extrapolate all the way back to the simplest conceivable organism, you end up at time when earth didn't exist and the universe was young.