For close to a century, scientists have been trying to marry Albert Einstein’s General Theory of Relativity and quantum ...

Fundamental physics faces a stubborn paradox: the current impossibility of reconciling the rules of the quantum world with those of gravity, despite a century of efforts. This theoretical ...

The best way to find buried treasure may be with a quantum gravity sensor. In these devices, free-falling atoms reveal subtle variations in Earth’s gravitational pull at different places. Those ...

A subtle timing flash may expose the Unruh effect. The approach ties ordinary lab tools to deep quantum physics. Researchers ...

George Musser’s new book finds resonances between the science of the latest wonder materials and string theory, quantum gravity, and the origins of space and time A new short volume by veteran science ...

Physicists have determined that most of the universe is dark matter -- invisible to us but affecting the universe anyway.

Any theory of quantum gravity is going to have to grapple with some weird time stuff. When you purchase through links on our site, we may earn an affiliate commission. Here’s how it works. You've ...

Just over a week ago, European physicists announced they had measured the strength of gravity on the smallest scale ever. In a clever tabletop experiment, researchers at Leiden University in the ...

Even teeny objects obey the law of gravity. A gold ball just 2 millimeters wide, with a mass of about 90 milligrams, is now the smallest object to have its gravitational pull measured. Observations of ...

A longstanding goal in physics has been to link general relativity with quantum theory and so unify the forces of nature. Theories of quantum gravity, however, are plagued by the weak theoretical ...