The vast sky is populated with a great many stars on which most of the inhabitants have fallen into ...
"The vast sky is populated with a great many stars on which most of the inhabitants have fallen into a deep sleep, called simply the “Slumbering Stars”. This is the story of a traveler of the stars, a worker for the Planetarium Ghost Travel Company (aka. PGT) named No. 303, as he spends his time visiting those sleeping stars in an attempt to preserve the memories and culture their peoples have left behind"