Mission to Mars

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Across
  1. 3. sent out by radio or television
  2. 8. to travel to discover new things
  3. 9. an important task or journey
  4. 10. the curved path of a planet or spacecraft
  5. 12. the layer of gases around a planet
  6. 13. tools used for a specific job
  7. 15. dangerous energy from space
  8. 16. people trained to travel in space
  9. 17. the act of sending something into space
Down
  1. 1. the force that pulls things towards a planet
  2. 2. large bowl-shaped holes on a planet’s surface
  3. 4. the gas humans need to breathe
  4. 5. a spacecraft used to travel into space
  5. 6. having no apparent weight
  6. 7. controlled or flown by a pilot
  7. 11. the team guiding the mission from Earth
  8. 14. small amounts collected for testing