What is the moon made of?

The moon is made mostly of rock and metal, with minerals much like Earth’s outer layers. It has no breathable air, no oceans, and no living soil. Scientists think it formed after a huge collision blasted material from young Earth, which later gathered into the Moon.

The bright parts are old crust, while many dark patches are plains of hardened lava called basalt. Those round dents came from ancient crashes, because the moon has almost no weather to erase them. Its surface keeps old marks for ages, like a history page made of stone.