Have you ever wondered why comets look the way they do when they get close to the sun?
You've heard about comets and asteroids in space. What is the different?
What is the difference between an asteroid and a comet?
Ancient people believed comets were omens. Sometimes they were thought to signal the fall of empires, other times the birth of kings. Even today, when we’re all supposed to be much more intelligent, people do crazy things when comets pass by. Learn more on this Moment of Science.