Asteroids Asteroids Asteroids are large or small solid objects in the solar system. They are sometimes called minor planets because they orbit the sun. Almost all asteroids come from the asteroid belt that is between Mars and Jupiter.
Asteroids range from many kilometers to a few meters less in diameter.
Gaspa, a strange asteroid was the first asteroid to be photographed at close range by the space probe Galiloed in 1991 at a distance of 1,000 mi. Mars has some asteroids for moons. Asteroids are thought to be remains of the last solar system that never grew to planetary size.