The world's most powerful physics experiment is well and truly under way. Scientists cheered as a beam of proton particles completed their first circuit of the 27km long Large Hadron Collider (LHC).
At 8.30am today, the machine which some fear could create a giant black hole capable of swallowing the planet was switched on. Dr Lyndon Evans, known as Lyn, is leader of the Large Hadron Collider (LHC) project at the Geneva-based European Organisation for Nuclear Research (CERN).
The white-haired Welshman showed few signs of stress, however, even finding time for a small joke when the machine took a second longer than expected to demonstrate it was operating correctly.