What is the asetroid belt made up of?

The asteroid belt is primarily composed of a large number of rocky and metallic objects, known as asteroids, that orbit the Sun between the orbits of Mars and Jupiter. These asteroids vary in size, shape, and composition, with some being made of rock and others containing metals like nickel and iron. The belt is thought to be remnants from the early solar system that never coalesced into a planet due to the gravitational influence of nearby Jupiter.