Answer:
Comets are cosmic snowballs of frozen gases, rock and dust that orbit the Sun. When frozen, they are the size of a small town. When a comet's orbit brings it close to the Sun, it heats up and spews dust and gases into a giant glowing head larger than most planets.
A meteor is a streak of light in the sky. A meteor, sometimes called a shooting star or falling star, is actually a space rock that is crashing through Earth's atmosphere. ... The heat causes gases around the meteoroid to glow brightly, and a meteor appears.
Asteroids are small, rocky objects that orbit the Sun. Although asteroids orbit the Sun like planets, they are much smaller than planets. There are lots of asteroids in our solar system. Most of them live in the main asteroid belt—a region between the orbits of Mars and Jupiter.
