Space!

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Across
  1. 1. Lights up the night sky.
  2. 3. Smallest planet.
  3. 4. A System of billions of stars.
  4. 7. Planet closest to the sun.
  5. 8. Our planet.
  6. 9. Light in the sky.
Down
  1. 1. Our solar system. _____ Way
  2. 2. The force that attracts to towards earth.
  3. 5. A person who travels in a spacecraft.
  4. 6. Largest planet.