Big Bang Theory Crossword Puzzle

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Across
  1. 2. system of celestial objects
  2. 6. special molecule
  3. 7. measurment of temperature
  4. 8. leftover light
  5. 10. big x-ray telescope
  6. 14. change is speed
  7. 17. difference in position
  8. 18. what passes when the clock ticks
  9. 19. nothingness
  10. 21. completely empty space
  11. 22. 1 lonely guy
  12. 24. adding small to small to make big
  13. 27. getting bigger
Down
  1. 1. Atomic Epoch
  2. 3. NOT matter
  3. 4. sucking stuff in and keeping it
  4. 5. the degree of hotness or coldness of an object
  5. 9. stars which brigthen and dim periodically
  6. 11. instruments that measure electromagnetic radiation
  7. 12. branch of physics dealing with the nature of the universe.
  8. 13. we were made by a big boom a long time ago
  9. 15. weaker or stronger line
  10. 16. Radiation era
  11. 20. an object is moving towards us
  12. 23. takes a year to travel
  13. 25. stretched light
  14. 26. electric charges and magnetic moments