The LHC (Large Hadron Collider) is once again colder than deep space as it is prepared for experiments to resume in late November.

The LHC’s eight sectors have all been cooled to 1.9 kelvin (-271 C, or -456 F) using cryogenic lines containing liquid helium. This operating temperature is colder than conditions in deep space, which is estimated to be 2.7 K. Zero K is the lowest temperature possible. Continued…