For more than a century, physics has been built on two great theories. Einstein's general relativity explains gravity as the bending of space and time. Quantum mechanics governs the world of particles ...

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 ...

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 ...