A century after Albert Einstein sketched out his radical picture of gravity, astronomers have now watched a black hole physically twist the fabric of spacetime around it. By tracking the death spiral ...

Some of the most extreme explosions in the universe are Type I superluminous supernovae. “They are one of the brightest explosions in the Universe,” says Joseph Farah, an astrophysicist at the ...

Spacetime isn’t something that exists; it’s a model for describing how events happen. Treating events as objects creates philosophical confusion and fuels misconceptions, such as time-travel paradoxes ...

Astronomers have long described black holes as cosmic traps so powerful that nothing — not even a beam of light — can claw its way free. Yet even these extreme objects have limits, and scientists say ...