Yes. Space includes planets, so the gravity wells of the planets, create different densities.
You said space, and not a perfect vacuum. So a vacuum in theory has no density. But there can be some elements so far apart they act as they effectively have no density.
Yes. Space includes planets, so the gravity wells of the planets, create different densities.
You said space, and not a perfect vacuum. So a vacuum in theory has no density. But there can be some elements so far apart they act as they effectively have no density.