PHYSICS CROSSWORD PUZZLE

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Across
  1. 2. ATOMIC NUMBER 88
  2. 5. METALS ARE
  3. 7. FURTHEST MAN MADE OBJECT FROM EARTH
  4. 9. NUCLEAR MUSIC GENRE
  5. 10. PROTON ANTI PARTICLE IS
  6. 11. MOTHER EARTH
  7. 14. USED TO MEASURE LINE SPECTRA
  8. 15. THE ROAD OF MILK
  9. 16. CONVERGING LENS IS ALSO KNOWN AS
  10. 18. CURRENT NAME ADVANCED X-RAY ASTROPHYSICS FACILITY
  11. 19. FIRST INTERSTELLAR OBJECT TO ENTER THE SOLAR SYSTEM
  12. 20. NICOL PRISM MADE OF
Down
  1. 1. UNIVERSE IS EXPANDING WAS DISCOVERED BY
  2. 3. CERN WAS LOCATED IN
  3. 4. DANGEROUS LASER TO EYES
  4. 6. ENERGY RELEASED IN NUCLEAR REACTORS
  5. 8. MAGELLANIC CLOUD IS
  6. 12. NUCLEAR PHYSICS WAS DISCOVERED BY
  7. 13. SNELL'S LAW RELATES
  8. 17. ULTIMATE FATE OF OUR SUN