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Parts of the Apollo missions remain on the Moon, here you can see one of the legs of the base of the lunar landing module. NASA

We need to protect the heritage of the Apollo missions

Just 12 people stepped on the Moon during the Apollo missions, but they left more than just footprints. It's a legacy that needs protecting from damage by any future Moon missions.
A nuclear reaction is under way inside the Sun. Emily Nunell/The Conversation CC-NY-BD

Curious Kids: how is the Sun burning?

It's true that here on Earth, if you want to burn something you need oxygen. But the Sun is different. It is not burning with the same kind of flame you would have on Earth if you burned a candle.

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