Black holes

The American physicists Rainer Weiss, Kip Thorne and Barry Barish were honored for dreaming up and realizing the experiment that confirmed the existence of gravitational waves.

Even as the solar eclipse was mesmerizing millions, astronomers were training their space- and land-based telescopes on a far more violent astrophysical event.

The pot-stirring string theorist and quantum gravity theorist never sits still for long.

The astrophysicist Andrea Ghez spent two decades proving that a supermassive black hole anchors the center of the Milky Way galaxy. Her new plan? Test what happens when things get too close.

The team that discovered gravitational waves put their data online. Now an independent group of researchers claims that they’ve found what might be a serious problem.

Recent calculations tie together two conjectures about gravity, potentially revealing new truths about its elusive quantum nature.

The Advanced Laser Interferometer Gravitational-Wave Observatory’s third detection further compounds the mystery of why black holes collide.

A series of observations at the very edge of the universe has reignited a debate over what lifted the primordial cosmic fog.

As physicists extend the 19th-century laws of thermodynamics to the quantum realm, they’re rewriting the relationships among energy, entropy and information.