> Either because it failed to colonize before being wiped out by disease, because it nuked itself, or because it implemented AI in a way that got itself killed.

> Either because it failed to colonize before being wiped out by disease, because it nuked itself, or because it implemented AI in a way that got itself killed. If the probability of a kind of disaster is sufficient to blow up Earth, it is likely that the same kind of disaster will blow up all the handful of colonies we can hope to build. At astronomic scale, the speed of light is quite slow.