Astronomy Vocabulary

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Across
  1. 2. the rising and falling of the sea
  2. 5. phases different appearances of the moon seen from earth
  3. 9. two or more objects orbiting each other and have a center mass
  4. 10. A radiant energy that creates electromagnetic energy
Down
  1. 1. the study of the universe
  2. 3. the periodic variation of the incline of the axis on a rotating object
  3. 4. 3 laws that describe the motion of the planets across the sky
  4. 6. to divide or split somethings into more than two parts
  5. 7. the action of rotating around an axis
  6. 8. the result of joining two or more things together to make one thing