Gravity Research update Sharp ring of light spotted around supermassive black hole Observation by Event Horizon Telescope confirms prediction of general relativity Read article: Sharp ring of light spotted around supermassive black hole
Quantum Research update Quantum complexity could solve a wormhole paradox New proof indicates that complexity is intrinsically linked to wormhole volume in quantum gravity Read article: Quantum complexity could solve a wormhole paradox
Gravity Research update Highly eccentric black-hole merger is identified in LIGO–Virgo observation Black holes probably had a chance encounter in a dense star cluster Read article: Highly eccentric black-hole merger is identified in LIGO–Virgo observation
Gravity Research update Physicists detect an Aharonov–Bohm effect for gravity Atom interferometers reveal strange quantum effect previously observed in electromagnetism Read article: Physicists detect an Aharonov–Bohm effect for gravity
Culture, history and society Podcasts Materials science conserves 500-year-old warship, new gravitational-wave discoveries by LIGO–Virgo In this podcast we chat with the chief executive of the Mary Rose Trust and LIGO–Virgo physicists at Cardiff University Read article: Materials science conserves 500-year-old warship, new gravitational-wave discoveries by LIGO–Virgo
Gravity Research update Black-hole laser could have quantum computing applications Proposed device uses superconducting technology Read article: Black-hole laser could have quantum computing applications
Gravity Opinion and reviews An illustrated guide to relativity Laura Hiscott reviews Reimagining Time: a Light-Speed Tour of Einstein’s Theory of Relativity by Tanya Bub and Jeffrey Bub Read article: An illustrated guide to relativity
Cosmology Research update LIGO gravitational-wave signal backs up Hawking’s area theorem Prediction made by the late theoretical physicist Stephen Hawking 40 years ago receives observational support Read article: LIGO gravitational-wave signal backs up Hawking’s area theorem
Quantum Research update LIGO mirrors have been cooled to near their quantum ground state Experiment opens a window on gravity’s effect on quantum objects Read article: LIGO mirrors have been cooled to near their quantum ground state
Gravity Research update Black holes merging with neutron stars have been spotted by LIGO–Virgo for the first time Two events were seen less than two weeks apart Read article: Black holes merging with neutron stars have been spotted by LIGO–Virgo for the first time