Apollo World 5 Unit 4 Crossword Puzzle

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Across
  1. 1. an act of travelling from one place or a trip.
  2. 4. a person who goes into space.
  3. 8. a large round object that goes around a star.
  4. 9. System our sun and the planets that orbit it.
  5. 10. a large group of stars held together by gravitational forces.
  6. 13. the quality of being or coming from outer space.
  7. 15. a polite way to argue about something.
  8. 16. to look for something.
  9. 17. a projectile or object that can go to great heights using combustion.
Down
  1. 2. all of space and everything in it.
  2. 3. facts and numbers that give information about something.
  3. 5. a vehicle that travels in space.
  4. 6. to talk to people.
  5. 7. to go around something in a circular or curved path.
  6. 11. that is outside of the Earth and other celestial bodies.
  7. 12. an object made of ice, gas and dust that goes through space.
  8. 14. the air and other gases that surround the Earth.