👉 A meteoroid, also known as a meteor or a meteorite, is an asteroid that orbits around Earth in such a way that it appears to be smaller than the average size of the planet. These asteroids are typically less than 20 meters (65 feet) in diameter and appear to have been formed by the collision of larger bodies with their own debris. Meteoroids can reach speeds up to about 14,000 miles per hour (22,800 kilometers