Astronomy crossword

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Across
  1. 3. A large glowing ball of plasma in space.
  2. 5. The planet known for its large, visible rings.
  3. 7. An object made of ice and dust with a glowing tail when near the Sun.
  4. 11. A group of stars that form a pattern.
  5. 13. The "Red Planet".
  6. 14. A huge collection of stars, dust, and gas held together by gravity.
  7. 16. The planet we live on, also called the "blue planet".
  8. 18. The second planet from the Sun, the hottest planet.
  9. 19. The largest planet in the solar system.
  10. 20. A natural satellite that orbits a planet.
Down
  1. 1. A celestial body orbiting a star.
  2. 2. The first man to walk on the Moon (last name).
  3. 4. The force that pulls objects toward each other.
  4. 6. The study of moons, stars, and other objects in space.
  5. 8. A tool used to see distant objects in space.
  6. 9. A bright streak of light caused by a rock burning up in the atmosphere.
  7. 10. The star at the center of our solar system.
  8. 12. The path an object takes around a star or planet.
  9. 15. A person trained to travel into outer space.
  10. 17. Small, rocky objects that orbit the Sun, often found in a belt.