Spaceflight Crossword

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Across
  1. 2. Agency responsible for Soyuz launches.
  2. 6. Moment of critical aerodynamic pressure, w/o spaces
  3. 8. Never-launched Space Shuttle.
  4. 10. Most common rocket oxidizer, for short.
  5. 11. Time reference used in space missions.
Down
  1. 1. Auxiliary spacecraft propulsion system.
  2. 3. Behind Raptor and Merlin engines.
  3. 4. Emergency EVA jetpack system.
  4. 5. Apollo 13 Commander.
  5. 7. Cygnus and LEM builder
  6. 9. Largest spacecraft ever assembled.