What is the difference between a comet and an asteroid?
Comets and asteroids are both leftovers from the formation of the solar system about 4.6 billion years ago. The main difference is what they are made of, which determines how they behave near the Sun. Asteroids: rock and metal Comets: dirty snowballs Famous comet: Halley’s Comet returns about every 76 years and is next expected … Read more