Undeterred by Time-Traveling Saboteurs, the LHC Begins Colliding

Take that, bread-dropping bird. Despite numerous delays and the suggestion that the Large Hadron Collider is being sabotaged from the future, the LHC is up and running. And, for the very first time, it has collided two proton beams.

Three days after the restart, CERN announced that it has circulated two beams simultaneously, and has observed proton-proton collisions. It's an exciting first step, but still a very first step:

"It's a great achievement to have come this far in so short a time," said CERN Director General Rolf Heuer. "But we need to keep a sense of perspective – there's still much to do before we can start the LHC physics programme."

It will still be a while before the LHC can go fishing for the Higgs boson, but the CERN researchers are fired up about collecting data on the proton collisions. The next step will involve altering the intensity and acceleration of the beams while getting a feel for the LHC's performance.

Two circulating beams bring first collisions in the LHC [CERN]