space

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Across
  1. 1. Imaginary line that goes throw the earth
  2. 2. Earth spinning on its axis
  3. 4. someone who travels to unknown regions to make discoveries
  4. 5. Has 8 rings
  5. 8. A group of stars
Down
  1. 1. a small celestial body composed of rock and metal
  2. 2. Earth's orbit.
  3. 3. Someone that flies in a rocket
  4. 6. Source of light
  5. 7. Only planet with life