The Big Bang Theory

The Large Hadron Collision

E15    Feb 8, 2010    21m    TV-PG
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Leonard can only bring one guest on a trip to see CERN's Large Hadron Collider (the world's largest and highest energy particle accelerator) in Switzerland on Valentine's Day.
Where to Watch The Large Hadron Collision
Cast of The Large Hadron Collision
  • Johnny GaleckiLeonard Hofstadter
  • Jim ParsonsSheldon Cooper
  • Kaley CuocoPenny
  • Simon HelbergHoward Wolowitz
  • Kunal NayyarRajesh Koothrappali

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