Asteroids are the leftover rocks that neither take part in the making of the planet nor they fuse together and grow large enough to become a planet. Asteroid shapes are highly irregular and covered with impact craters. Some of the Largest asteroids have got enough gravity which pulls them into a spherical shape. Some asteroids have moons, and some are also found in the double and triple systems. This video shows the size, information, distance from the sun, mass, density, and orbital period of asteroids and comets. For more info on asteroids check out the "Asteroids size comparison: exploring asteroids" video on the channel.