Physics

The new experiment demonstrated a bizarre quantum effect from the double-slit experiment at an unprecedented scale.

Physicists are scouring the universe for evidence that one of the fundamental constants of nature, Newton's gravity, is not constant at all.

Black holes may not have singularities at their heart, but instead may be stuffed with dark energy.

It probably isn't a black hole, if it exists at all. But two physicists think we should check to see if it's a black hole anyway.

China already had the power to kill you with nukes. This doesn't change anything, but it could fan the flames of an arms race.

Astronomers have discovered the oldest cluster of galaxies ever seen.

The KATRIN experiment has turned up a new, more-precise-than-ever measurement for the barely-detectable neutrino mass.

Physicists have proposed that a trio of particles called Higgs bosons could be responsible for the mysterious vanishing act of antimatter in the universe.

This mysterious matter was predicted from Einstein's theory of special relativity, but physicists can't seem to find it!

Are black holes bald or hairy? It all depends on the details of a fleeting overtone.

A new, hours-long Hubble study of the collision site revealed never-before-seen details of the neutron-star merger

Something's disrupting the distant black hole's accretion disk, but no one knows what it is.

A pulsar 25,000 light-years away is wobbling in a weird way. But Einstein's theory of general relativity predicted it more than a century ago.

Astronomers have detected a neutron star system blasting X-ray light at Earth and detected a rare, months-long pattern in those light bursts.

The cosmological constant has plagued physicists for more than a century.

The team of researchers that captured the first direct image of a black hole was honored with an "Oscar of Science" — the 2020 Breakthrough Prize in Fundamental Physics.

The universe's most massive objects are crashing into each other, and they're leaving a rain of gold and platinum behind them.

The largest physics detector on Earth hunts gravitational waves. But it needs to be really, really quiet to find them.