Space

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Across
  1. 3. A type of rocket engine where the fuel and oxidiser are blended together. (5,4)
  2. 4. German rocket scientist who developed the V-2 rocket. (3,5)
  3. 6. American father of rocketry.
  4. 7. German father of rocketry.
  5. 8. A layer of gases around a planet.
  6. 11. A change in velocity.
  7. 13. A type of spacecraft.
  8. 14. The world's first satellite.
Down
  1. 1. A type of rocket engine where the fuel must be pumped. (6,4)
  2. 2. A rocket design designed to boost acceleration.
  3. 5. Author of "From the Earth to the Moon". (5,5)
  4. 9. Russian father of rocketry.
  5. 10. A spacecraft designed to stay in orbit.
  6. 12. Travel around a planet.