How specific asteroids and comets make repeat appearances after so many years of space is an endless and ever expanding vacuum.

Question

I feel like the answer can only be “ping pong” with another gravitational body, but that seems far too coincidental.

In: Planetary Science

Answer 1

Asteroids and comets which re-appear are just orbiting the sun, the same as all the planets are.

They simply have *really big* orbits, so they’re only near us every so often.