vocabulary contact

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Across
  1. 4. study planets, stars, and other celestial bodies
  2. 8. the earth __
  3. 9. planet that are close to the sun
Down
  1. 1. planets what is far from the sun but in the solar System __
  2. 2. the earth spins on its ___
  3. 3. where did the astronaut step on first ___
  4. 5. the curved path of a celestial object is a ___
  5. 6. what make through the path of the earth is a __
  6. 7. frozen leftovers from the formation of the solar system composed of dust, rock, and ices is a ___