Scientists working at the world’s biggest atom-smasher say they have discovered a new kind of particle called “pentaquarks”.

Scientists herald a new frontier in physics

The Large Hadron Collider (LHC) has been fired up to start delivering physics data for the first time in 27 months, meaning experiments can resume at the world’s largest particle accelerator.

Scientists are in the process of restarting the Large Hadron Collider, the most powerful atom-smasher ever built, hoping to make history for the second time in two years.