Space

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Across
  1. 3. Our furnace
  2. 4. Smaller than planet, not a comet
  3. 7. Red planet
  4. 8. Earth satellite
  5. 10. First man on the moon
Down
  1. 1. Morning star
  2. 2. First man in space
  3. 5. Space object with tail
  4. 6. Larger Mars Satellite
  5. 9. First planet