The machine that could revolutionise physics

Will the Universe reveal a big secret? Deep underground in France, the world's biggest science experiment is aiming to unlock the secrets of the universe. What's happening? Dr Marcella Bona is 100 metres underground. She is standing in the biggest machine in the world.  "It's an exciting time," she says.  Find out more Dr Bona works at the Large Hadron Collider. It is a particle accelerator: a long, huge tube built over ten years between 1998 and 2008. It sits 100 metres underground in a 16-mile ring tunnel. Scientists use the collider to study tiny particles created by atomsThe smallest unit of any chemical element. crashing together inside it. Years ago, the collider made a huge breakthroughA sudden advance or successful discovery in science.: the discovery of the Higgs boson. This is something that has helped scientists understand how the universe works. The collider was closed in 2018. But now it has been updated. Scientists are ready to use it once again.  Will the Universe reveal a big secret? Some say Yes! We are going to discover something big. The collider can show us things about physics we can only imagine. This is an exciting time.  Others think  No. We have reached the limit of what science can tell us about the Universe. The collider is amazing. But it will not give us any answers.  KeywordsAtoms - The smallest unit of any chemical element.