solar system

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Across
  1. 3. an instrument used to look at the stars
  2. 4. the red planet
  3. 6. the hottest planet
  4. 7. the planet furthest from the sun
  5. 10. the number of planets in our solar system
Down
  1. 1. a person who travels in space
  2. 2. the planet closes to the sun
  3. 5. Neil Armstrong was the first person to walk the ...
  4. 8. dwarf planet with two moons
  5. 9. the planet we call our universe