UCL experts including Dr
Hiranya Peiris (UCL Physics & Astronomy) comment about the discovery
of gravitational waves - ripples from the Big Bang 14.8 billion years
ago, which were predicted
by Einstein almost a century ago.
Watch: Newsnight More: The Guardian,
ITV News at Ten,
Channel 4 News,
Listen: BBC Radio 4 'Inside Science' (from 4 minutes 10 sec)