In search of the cosmic beginning

The world's most ambitious physics experiment begins today near Geneva, Switzerland. Using a 27km-long underground tunnel which houses the Large Hadron Collider (LHC), scientists will attempt to re-create the conditions of the Universe at its birth. The project has taken 30 years from conception to switch on and has cost $10 billion so far. Read more about its mindboggling size and complexity here.

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