Professor Jim Al Khalili delves into over 50 years of archive BBC science to tell the story behind the appearance of one of the great theories of modern science, the Big Bang.
The remarkable idea that our universe started from nothing, just not always been accepted with the conviction that it is today and, since early left fiercely contested, took the better part of 20 century to emerge as the triumphant explanation of how the universe began.
Using curious horn-shaped antennas, U-2 planes to spy satellites and particle accelerators, scientists have gradually rebuilt the cosmological puzzle, and this documentary charts the overwhelming evidence for a universe created by a Big Bang.
