Crossword by Cameron and Antonio

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Across
  1. 2. space planes
  2. 5. man going in to space
  3. 7. military vehicle propelled by propellant or liquefied gases
  4. 8. it's very hot there
  5. 9. unidentified object
  6. 10. robot exploring planets
Down
  1. 1. lack of gravity
  2. 3. shining point in the sky
  3. 4. satellite of earth
  4. 6. a space vacuum