Moon Crossword Puzzle

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Across
  1. 1. a curved path followed by one object moving around another object
  2. 4. the force that pulls objects towards the center of the planet
  3. 6. the rise and fall of the sea level caused by the moon
  4. 8. a large hole caused by an explosion
  5. 9. a stage in a process of change or development
Down
  1. 2. to turn around a central fixed point
  2. 3. able to live on
  3. 5. connected with the moon
  4. 7. an object that moves around a larger object in space
  5. 8. crash into