Enlarge / An artist’s impression of a neutron star getting ready to blast its neighbor with radiation. (credit: NASA) Our Sun is on its own in this galaxy, without a nearby companion orbiting with it. But binary star systems are pretty common, and our nearest neighbor appears to be a three-star system. Given how many […]
The successful gravitational-wave detections just keep coming for the LIGO-Virgo-KAGRA collaboration, which has now confirmed two separate “mixed” mergers between black holes and neutron stars, sending powerful gravitational waves rippling across spacetime. Those signals were detected last year by the collaboration, just 10 days apart. A year and a half later, the events officially constitute […]