2:46

Earth, Theia – and the creation of our Moon

Earth once had a twin, Theia. This is how they collided and made the Moon. Footage taken from the show One Strange Rock.
4:17

Meet three astronauts selected to train for missions to the moon

December 9, 2020 - NASA just chose 18 astronauts to train for the agency’s Artemis missions, which aim to put the first woman and the next man on the moon. National Geographic talked with three of these astronauts about the journey ahead.

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