Read article: Black-hole–neutron-star merger may have been spotted by LIGO–Virgo
Upgraded gravitational-wave detectors report five possible events in April alone
Read article: More black-hole mergers from LIGO–Virgo
The APS April Meeting kicks off in Denver
Read article: Einstein’s general theory of relativity passes a supermassive test
Star orbiting huge black hole confirms local position invariance
Read article: Gravitational waves could resolve Hubble constant debate
Observing the gravitational-wave signal from 50 future neutron star-mergers will give the most accurate measurement of Hubble’s constant to date, scientists claim
Read article: Gravitational waves could reveal the birth of a quark star
Simulations uncover signatures in gravitational-wave spectra of a postulated phase transition in neutron star mergers
Read article: LIGO–Virgo announces observation of four more black-hole mergers
Six gravitational-wave events were seen in less than one month of observation time
Read article: A wave of discovery
James Hough tells the story of the last 30 years of gravitational-wave astronomy, which has had a revolutionary impact
Read article: Gravitational waves reveal radii of colliding neutron stars
GW170817 merger involved objects with radii less than 12 km
Read article: Stephen Hawking’s ‘final paper’ on hairy black holes hits the headlines
Work is posted online as the late cosmologist’s “final book” is about to be published
Read article: Gravitational-constant mystery deepens with new precision measurements
Two experiments yield significantly different results
