Interrelationships in Earth/Space Systems Crossword

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Across
  1. 3. A celestial body that is made from rock, dust, gas, and ice that orbits the sun
  2. 4. Force of attraction between objects that brings them closer together
  3. 7. Time of day when sunlight hits your side of the earth that you're on
  4. 10. This space shuttle launched in 1981
  5. 11. Changes as the Earth's tilted axis orbits the sun
  6. 13. Occurs when light is blocked by one celestial body blocking the light reflected from another celestial body
  7. 15. Highest part of an orbit
  8. 16. When the whole near side of the Moon is illuminated
  9. 18. An asteroid that hits the Earth
Down
  1. 1. Movement of an object spinning on its axis
  2. 2. Last name of man who created the 3 laws of motion
  3. 5. Caused by gravitational pull of the Moon and the Sun on Earth's bodies of water
  4. 6. Motion in the orbital path of a celestial body
  5. 8. Takes the moon 29.5 days to go through all its...
  6. 9. Amount of matter in an object
  7. 12. Rocky, metallic object that orbits the sun but is too small to be a planet
  8. 14. Was once known as a planet, but was changed to a dwarf planet
  9. 17. When whole near side of the Moon is dark