Travel into space

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Across
  1. 1. a suit so astronauts can survive in space
  2. 3. a person who controls an engine or an
  3. 7. the collection of eight planets and their moons in orbit round the sun
  4. 8. a person trained to travel in a spacecraft
  5. 9. a spacecraft that is driven by a rocket
Down
  1. 2. the point in the orbit of a planet, asteroid, or comet at which it is furthest from the sun
  2. 3. the planet on which we live
  3. 4. a system of millions or billions of stars
  4. 5. national aeronautics and space administration
  5. 6. branch of science which deals with space