Astronomy Crossword Puzzle

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Across
  1. 3. The number of stars in the Big Dipper
  2. 7. The planet with rings
  3. 10. Small rocky objects that revolve around the sun, mostly in the area between Mars and Jupiter
  4. 12. A mass of material with a long tail that travels around the Sun
  5. 13. A scientist who studies stars and planets
  6. 14. The largest planet in our solar system
  7. 15. The spinning of the Earth on its axis
Down
  1. 1. The name of our galaxy
  2. 2. The planet closest to Earth
  3. 4. The "Red Planet"
  4. 5. A group of stars with a definite pattern or arrangement
  5. 6. The planet closest to the Sun
  6. 8. An instrument that makes distant objects look larger and closer
  7. 9. The distance light travels in one year
  8. 11. A person who is trained to travel in a spacecraft