Multiplanetary

A species that does not become multiplanetary is simply waiting around until there’s some extinction event, either self-inflicted or external.
— Elon Musk

On the one hand, it is fun to have a nerdy multi-billionaire speaking his mind, and on the other hand, I think, ultimately, he is correct.

Unfortunately, I don’t think it is possible to become truly multiplanetary. I would love to be proven wrong.