Asteroids are small, rocky objects that orbit the Sun and are found mainly in the Asteroid Belt between the orbits of Mars and Jupiter. They vary in size, with some being as small as a pebble and others as large as a mountain. Unlike planets, asteroids do not have a clear atmosphere and are made up of metals and other materials. Many scientists study asteroids because they can provide valuable information about the early solar system. Some asteroids even have their own moons! Occasionally, asteroids can come close to Earth, which raises interest in understanding their paths and potential impacts.