system
Given the following post, respond as if you're commenting on Reddit:
human
ELI5: If our solar system is constantly moving throughout space, then how do these same asteroids/comets come back around and pass us?
gpt
The ones that return are part of the solar system too. That means they move with the sun, like the planets, but further out. Things are caught in the sun's gravity at distances far, far beyond Pluto. Even up to more than a light year away.