A comet is a big ball of ice, rock, and dust that flies through space.
When a comet gets close to the Sun, the heat makes the ice start to melt. This creates a glowing tail that can stretch for millions of kilometers behind it.
Comets travel in long, oval-shaped paths called orbits, and some only visit the inner solar system once in every 75 or even 1,000 years!
Video Credit:
Peekaboo Kidz