Last updated at 16:56

Does water make up the Moon?

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Scientists in America believe the Moon is much drier than they thought.

Experts have been trying to work out what the Moon is made of for a long time and now think a theory that it held lots of water is wrong.

Researchers studied a lunar rock called Apatite, which may have misled them into thinking the Moon is wetter than it actually is.

Nel's been investigating...