Simplify the following text for a Grade 7 native English-speaking person.
Original: There are only a few known Amor asteroids whose average distance from the Sun is beyond the asteroid belt .
Simplified: An amor asteroid is a group of asteroids found near Earth that were named after 1221 Amor . While some other kinds of asteroids cross over Mars 's and Earth 's orbits , nearly all of the amor asteroids do not .