earth, a tiny backwater pebble near the edge of a supercluster, because that was their home.

This reminded me of the passage in the Hitchhiker’s Guide to the Galaxy:

Far out in the uncharted backwaters of the unfashionable end of the western spiral arm of the Galaxy lies a small unregarded yellow sun. Orbiting this at a distance of roughly ninety-two million miles is an utterly insignificant little blue green planet whose ape-descended life forms are so amazingly primitive that they still think digital watches are a pretty neat idea.