Space

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Across
  1. 1. An object emitting light
  2. 4. Device to cause explosion at impact
  3. 6. Production of thrust to push an object forward
  4. 7. A liquid substance used for accelerating forward
Down
  1. 2. A rope to hold on to another object
  2. 3. Seat that launches the person during an emergency
  3. 5. Transports crews to the International Space Station and returns them to Earth after their mission
  4. 6. The load carried by a vehicle exclusive of what is necessary for its operation