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Hi, I'm Juliette with more science news you can use.

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Do astronauts need calcium in space?

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I'm told to drink milk for calcium. Can't astronauts drink milk too?

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Astronauts don't have refrigerators in space to store milk.

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But they can still get calcium with a good diet.

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I heard astronauts may need more calcium in space. Why?

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In space, bones don't have to support as much as on Earth.

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Your body believes bones don't need as much calcium.

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Some of the calcium is taken out of the bones and is excreted from the body.

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NASA knows exercising in space helps keep an astronaut's body and bones strong like on Earth.

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I'll keep drinking milk and exercising to help my bones on Earth.

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Can I do anything else?

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To find out more, check out our website.

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Until next time, I'm Juliette with cool NASA facts you can use.

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Music.