On the fourth day of advent, we remember one of our most exciting cosmological events, watching the announcement of the detection of gravitational waves in 2016.
We're proud to announce the launch of a documentary we have been working on together with the Discovery Channel and the Stephen Hawking Centre for Theoretical Cosmology in Cambridge.
To celebrate the recent centenary of the first major test of Einstein's general theory of relativity, we look back over how our picture of gravity has changed.