We should abandon planets and instead live on comets. Life originally came from comets anyways, so it's only fitting we return to them. Then where the cometary halos of other solar systems overlap, we can jump over to new comets and (very very slowly) expand throughout the galaxy.
wut?
Life originally came from comets anyways, so it's only fitting we return to them.
Life originally came from comets
sauce?
Er, I don't think there is or ever was actual 'life' on comets, though it is true that comets contain water and some of the ingredients for building life, and thus are generally thought to have delivered that material to the early Earth.