Large Hadron Collider

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© CERN.

The Large Hadron Collider (LHC), shown here from above, is capable of creating the highest-energy collisions on Earth, with a center-of-mass energy of 14 TeV. Unfortunately, even the LHC does not come close to measuring the Planck-scale physics that was important for inflation. To learn about those, we must rely on observational cosmology to find clues to what happened in the largest particle accelerator of all: the Big Bang. (Unit: 4)