Space Explorer Crossword Puzzle

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Across
  1. 2. Vehicle used to travel into space
  2. 3. The force that keeps us on the ground
  3. 4. Large object that travels around a star
  4. 7. Huge group of stars in space
  5. 8. A person who travels into space
  6. 10. Earth’s natural satellite
Down
  1. 1. The path planets travel around the sun
  2. 3. A giant system of planets and stars
  3. 5. Blue planet far from Earth
  4. 6. Bright object seen in the night sky
  5. 9. The star closest to Earth