Space crossword

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Across
  1. 2. The red eye
  2. 5. A place at which a planet is furthest from the sun
  3. 6. The moon and sun in opposition
  4. 7. An expanding meteor
  5. 8. Dwarf planet
  6. 9. Point directly above an observer
Down
  1. 1. When the moon blocks the sun
  2. 3. Centre of mass
  3. 4. Glow in the sky caused by radiation