Re-L1-unit 4a vocabulary

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Across
  1. 1. n. a very big group of stars
  2. 5. v. to speak or write to someone
  3. 9. n. a large world like Earth
  4. 10. adj. very strong
  5. 12. n. words you send to someone
  6. 14. n. how far it is from one place to another
  7. 16. adv. in another place
  8. 17. v. to find out what something is
  9. 18. n. a way of doing something
Down
  1. 2. n. a person who travels in space
  2. 3. n. a scientist who studies stars and planets
  3. 4. v. to get something
  4. 6. v. to go around something
  5. 7. n. a tool for seeing far into space
  6. 8. adj. smart; able to think and learn
  7. 11. n. space and everything in it
  8. 13. v. to look for something
  9. 15. prep. further than