Although humans haven't set foot on the moon since 1972, we're consistently making new discoveries about Earth's satellite.
Scientists believe the moon was created 4.5 billion years ago, when a Mars-sized object crashed into Earth and created orbiting debris that later formed the moon.
The moon is not habitable for humans for many reasons, including its temperature fluctuation and lack of liquid water.
This month, China landed on the far side of the moon, a first for humanity.
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