The Solar System

12345678910
Across
  1. 3. Neptune’s largest moon, known for its retrograde orbit
  2. 5. A region where a star’s gravity prevents light from escaping
  3. 6. Name for a day on Mercury, which lasts longer than its year
  4. 7. The icy region beyond Neptune filled with small bodies
  5. 10. The belt of rocky debris between Mars and Jupiter
Down
  1. 1. The boundary where the Sun's influence ends
  2. 2. Home to the deepest canyon, Valles Marineris
  3. 4. Planet with the fastest orbit around the Sun
  4. 8. The only planet that rotates on its side
  5. 9. Gas giant with a Great Red Spot