Science-ing it up!

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Across
  1. 6. Nick and Schmidt's party...
  2. 7. Hunter in the skies
  3. 8. Why the sun shines
  4. 9. Always attractive
  5. 10. What some cool people do
  6. 14. Not as cool as Molybdenum Man
  7. 15. Old plumbers favourite
Down
  1. 1. Sheldon's favourite theory
  2. 2. Carbon and Hydrogen
  3. 3. Not a pound, not stone, not a gram
  4. 4. Floating
  5. 5. Neil DeGrasse Tyson kicked you out of the club (even though he denies it :P)
  6. 11. Marie Curie and the reason why glowing in the dark isn't always a good thing
  7. 12. Light
  8. 13. Shiny