Vocabulary of Parts of the Solar System

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Across
  1. 3. To move around another object
  2. 4. A big, round object in space that moves around the Sun
  3. 7. The system made of the Sun and everything that moves around it
  4. 9. A huge group of stars and planets held together by gravity
  5. 11. The force that pulls objects together in space
  6. 12. The star at the center of our solar system
Down
  1. 1. The name of the North Star
  2. 2. A star that stays in the same place in the sky
  3. 5. An object that moves around a planet
  4. 6. Earth spins once every one of these
  5. 8. The galaxy our solar system is in
  6. 10. A tool that shows days, months, and years
  7. 12. The movement Earth makes to create day and night