Why do neutrinos, these elementary particles, sometimes seem to act in such a puzzling way? For decades, physicists have been ...

New measurements using gravitational lensing suggest the universe’s current expansion rate does not agree with signals from the early cosmos.

Brian Cox explains the most extreme, dangerous region in the cosmos, where gravity, radiation, and physics push the limits of ...

Three thought experiments involving “demons” have haunted physics for centuries. What should we make of them today?

From a particle smasher encircling the moon to an “impossible” laser, five scientists reveal the experiments they would run ...

Galaxy clusters are the most massive objects in the universe held together by gravity, containing up to several thousand ...

Current physics is speeding toward a breaking point, as astronomers confirm that the Hubble tension in new data.

Neutrinos are one of the most mysterious particles in the universe, often called "ghost particles" because they rarely ...

The exploration of quantum information challenges objective reality, positing the universe as a hologram is explored through ...

Aliens might be transmitting communications signals to each other across exoplanets, some astronomers think. Since these ...

Scientists are testing a novel way to measure cosmic expansion using time delays in gravitationally lensed quasars. Their ...

In the end, the Universe becomes a place where gravity and quantum physics slowly turn all mass into faint streams of particles.