To celebrate the one-year anniversary of a discovery that changed the face of astronomy, this week we feature the exclusive world premiere of a new documentary. LIGO Detection reveals what unfolded behind the scenes between the detection of merging black holes on 14 September 2015, and five months later when LIGO announced it to the world. Sign up to our newsletter and find out about exclusive content like this before anyone else: https://www.newscientist.com/registration/ Read more about the di