The Asteroid Belt is a vast, doughnut-shaped region in our solar system, located predominantly between the orbits of Mars and Jupiter, approximately 2.2 to 3.2 Astronomical Units (AU) from the Sun. It hosts millions of rocky and metallic objects, ranging from dust particles to dwarf planets like Ceres, which are remnants from the early solar system that never coalesced into a full planet due to Jupiter's immense gravitational influence.

Meteorites are fragments of asteroids or other celestial bodies that survive atmospheric entry and land on Earth. Their composition is crucial for understanding early solar system materials. Most are stony meteorites, predominantly chondrites, which contain chondrules (primitive spherical silicate grains) and represent unaltered solar nebula material. Achondrites are also stony but show evidence of melting and differentiation. A smaller, yet significant, group are iron meteorites, composed mainly of iron-nickel alloy, believed to be fragments of the cores of larger, differentiated asteroids. Rare stony-iron meteorites (e.g., pallasites) comprise both metal and silicates, thought to originate from the core-mantle boundaries of parent bodies.