Astronomy Crossword

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Across
  1. 5. Earth's natural satellite
  2. 7. A huge ball of hot glowing gas, like our Sun
  3. 9. A place in space where gravity is so strong that not even light can escape
  4. 11. An instrument used to see distant objects in space
  5. 13. A giant cloud of gas and dust in space
  6. 14. When one space object moves into the shadow of another
  7. 15. The smallest planet and the closest to the Sun
  8. 17. Light from the Sun takes about _ minutes to reach Earth
  9. 18. The force that keeps planets in orbit around the Sun
  10. 19. A bowl-shaped dent made by an impact on the Moon
  11. 20. The star at the center of our solar system
  12. 21. A vehicle that launches spacecraft into orbit
  13. 23. The Moon's gravity is about one _ of Earth's gravity
Down
  1. 1. The distance light travels in one year
  2. 2. The number of people who have walked on the Moon is _
  3. 3. An icy space object with a glowing tail
  4. 4. A person trained to travel in space
  5. 6. A giant group of stars, gas and dust, such as the Milky Way
  6. 8. The largest planet, with a famous Great Red Spot
  7. 10. The hottest planet in our solar system
  8. 12. The planet with the most spectacular rings
  9. 15. The Red Planet
  10. 16. The time Earth takes to orbit the Sun once
  11. 17. The third planet from the Sun
  12. 22. The curved path of a planet around a star