How Do We Know the Moon Is Not Made of Cheese?

Imagine you have a big, round rock in the sky, that’s the moon. Some people thought it was made of cheese because it looked so smooth and white. But we’ve sent robots to visit the moon, and they took rocks back with them. Those rocks didn’t taste like cheese at all! Scientists studied those rocks and found out the moon is mostly made of rock, not cheese.

We also use telescopes on Earth and in space to look very closely at the moon. These tools let scientists see what the moon is made of, just like a detective solving a mystery.