سیارک

An asteroid is a rocky, metallic, or icy object at least 1 meter in size that orbits the Sun in the inner Solar System, distinct from planets and comets. Asteroids vary widely in size and composition, ranging from small rubble piles to bodies nearly 1,000 kilometers across, and they matter because understanding their characteristics and movements helps us track potential impacts and learn about the early Solar System.

AI-generated from the Wikipedia summary — may contain errors.