Gravitational waves shown to be rippling space-time constantly, like swells on the ocean

After collecting data for more than twelve years the North American Nanohertz Observatory for Gravitational Waves (NANOGrav) announced it may have detected new kinds of gravitational waves caused by colliding supermassive black holes. Professor Chiara Mingarelli of the University of Connecticut tells Roland Pease why this is such an exciting discovery.  Supermassive black holes are at the heart of galaxies and they are the engines of quasars, the brightest light sources in the heavens that can b

* duration: 1:03h, Played: 3:41

* Published: 1/17/21 11:00:00 AM

* Episode Download link (29 MB): http://open.live.bbc.co.uk/mediaselector/6/redir/version/2.0/mediaset/audio-nondrm-download-low/proto/http/vpid/p09456tg.mp3

* Show Notes: http://www.bbc.co.uk/programmes/w3cszkxw

* Episode feed: The Science Hour - https://podcasts.files.bbci.co.uk/p016tmt2.rss

Monty Bannerman
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