Moon

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Across
  1. 5. Another scientific name used for Earth's specific moon.
  2. 8. The phase occurring after a Full Moon where the left half is lit.
  3. 9. A moon phase that looks like a thin, curved sliver.
  4. 11. A natural or artificial body that revolves around a larger planet.
  5. 13. The spinning of the Moon on its axis, which takes the same amount of time as its orbit.
  6. 15. The period when the sunlit fraction of the Moon is getting smaller.
  7. 17. The process where debris from Earth's mantle was blasted into orbit following a massive collision.
  8. 18. The force that keeps the Moon in orbit and is only 17% as strong as Earth's at the surface.
  9. 19. The phase where the Moon is between the Earth and Sun, appearing completely dark to us.
Down
  1. 1. The phase where the entire side of the Moon facing Earth is lit up.
  2. 2. The stage where clumps of ejected material joined together to create the Moon.
  3. 3. Large, dark, flat plains on the Moon created by ancient lava flows.
  4. 4. The initial event 4.6 billion years ago when a Mars-sized object struck the molten Earth.
  5. 6. The different appearances of the Moon due to its changing position relative to Earth and the Sun.
  6. 7. The 27.3-day journey the Moon takes to complete one full orbit around Earth.
  7. 9. A bowl-shaped depression caused by the impact of space objects over billions of years.
  8. 10. The phase occurring about a week after a New Moon where the right half is lit.
  9. 12. The period when the sunlit fraction of the Moon we see from Earth is getting larger.
  10. 14. The layer of Earth that provided much of the rocky material found in lunar samples.
  11. 16. A moon phase that is more than half lit but not yet a full circle.