Space Unit Vocabulary

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Across
  1. 3. different "shapes" of the moon throughout the month (2 words)
  2. 5. the last name of the guy who "discovered" gravity
  3. 6. invented by Galileo and used to see objects far away
  4. 8. an expert who studies space and the physical universe
  5. 11. a group of stars that form a shape in the night sky
  6. 13. a planet spinning once around its own axis (one day)
Down
  1. 1. planets that are outside of our own solar system
  2. 2. the force that attracts a body towards the center of Earth
  3. 4. the movement of Earth around the sun (one year)
  4. 7. the path of a planet around the sun, or a moon around a planet
  5. 9. this uses shadows to tell the time
  6. 10. Earth's natural satellite that shines by reflecting the Sun's light
  7. 12. an invisible line that a planet spins around