ANSWERS: 1
  • Imagine you are standing on the moon, with the Earth in the sky. Relative to you, the Earth always appears approximately in the same place in the sky - this is because the moon is tidally locked with the earth. You see the earth rotate once every 24 hours. Thus you see every point on the earth and they see you. But the sun moves around you once a month. So the pattern of light and dark on the moon varies once a month. That's not just for you, but for the people of Earth as well.

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