Earth, Moon and Sun Crossword

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Across
  1. 2. the border between light and dark on the moon
  2. 3. the nearly circular path a smaller object travels around a larger object
  3. 6. moon: a moon phase that looks like a full circle from Earth
  4. 7. the relative size of things
  5. 9. phase: the shape of the illuminated part of the moon as it appears from Earth
  6. 10. the star that is the main source of light at the center of out solar system
  7. 12. a moon outside our solar system
  8. 15. Eclipse: When the moon is completely dark
  9. 16. Moon: a moon phase that looks like half-circle from Earth
  10. 18. a planet outside our solar system
Down
  1. 1. moon: a moon phase that looks like more than a half a circle from Earth
  2. 4. to shine light on an object and make it visible
  3. 5. the amount of time it takes for a planet to complete one orbit around star or stars
  4. 8. Moon: a moon phase that looks like less than half a circle from Earth luna crescent
  5. 11. Moon: A moon phase in which the moon is not visible from Earth
  6. 13. a rocky sphere that travels around the planet
  7. 14. something we observe to be similar over and over again
  8. 17. system: the sun the planets that orbit the sun and other objects that orbits the sun