Outer Space

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Across
  1. 4. A flying rock in space that enters Earth's atmosphere.
  2. 7. A vehicle astronauts use to explore space.
  3. 9. A person who travels into space.
  4. 12. The first U.S. space agency.
  5. 14. The name of NASA’s famous space telescope.
  6. 16. The planet known for its rings.
  7. 17. A glowing tail appears when this object moves close to the Sun.
  8. 18. The first person to walk on the Moon.
Down
  1. 1. The name of the red planet.
  2. 2. A force so strong that nothing can escape it.
  3. 3. A group of stars forming a pattern.
  4. 5. The galaxy we live in.
  5. 6. The name of Earth's natural satellite.
  6. 8. The closest star to Earth.
  7. 10. A giant explosion that starts a star's life.
  8. 11. The largest planet in our solar system.
  9. 13. The planet closest to the Sun.
  10. 15. The force that keeps planets in orbit.
  11. 19. A large system of stars, gas, and dust.