How astronomers used gravitational lensing, a space-time trick predicted by Einstein, to detect a black hole measuring 30 billion times the mass of the sun.

Some physicists think our reality is a kind of cosmic hologram, with space, time, and gravity as manifestations of a ...

Researchers at the Niels Bohr Institute, University of Copenhagen, have developed a tunable system that paves the way for ...

In physics, there are two great pillars of thought that don't quite fit together. The Standard Model of particle physics describes all known ...