What is Gravity?

Izzie & Dr Becky think that space needs a spring clean, so this episode is all about space debris. What is it? How big of a problem is it? And what is being done to remove it? With thanks to PhD student Megan Perks from the University of Southampton, who studies how safe all thes ...  Show more

What. A. Mission. The Supermassive Team are in AWE of the Artemis II Crew and the people that helped them to loop around the Moon. From scientific aims to societal impact, Izzie Clarke, Richard Hollingham and Dr Robert Massey reflect on this latest step to returning to the Moon a ...  Show more

Einstein's theory of general relativity has been our best understanding of gravity for over a century, withstanding a variety of experimental challenges of ever-increasing precision. But we have to be open to the possibility that general relativity -- even at the classical level, ...  Show more

Observations of the cosmos suggest that unseen sources of gravity — dark matter — tug at the stars in galaxies, while another mysterious force — dark energy — drives the universe to expand at an ever-increasing rate. The evidence for both of them, however, hinges on assumption ...

The quest for a theory of everything – explaining all the forces and particles in the universe – is arguably the holy grail of physics. While each of our main theories of physics works extraordinarily well, they also clash with each other. But do we really need a theory of everyt ...  Show more

Netflix has a big new show named after and inspired by a classic problem in astrophysics, 'The Three Body Problem', where predicting the course and orbits of three or more celestial bodies proves near impossible.But how faithful is the Netflix show - and original novel - to the a ...  Show more