See more of our trusted coverage when you search. Prefer Newsweek on Google to see more of our trusted coverage when you search. An international team of astronomers has conducted a new test of Albert ...

From the new study, a computer-simulated image of a galaxy, as seen from the side. On right, in red-blue color, you are seeing the gas density within the disk of the galaxy, with the stars shown as ...

Einstein’s general theory of relativity—the idea that gravity is matter warping spacetime—has withstood over 100 years of scrutiny and testing, including the newest test involving supermassive black ...

Physicists have long struggled with their goal of making gravity a quantum force. A radical post-quantum approach might solve ...

A single star, careening around the monster black hole in the center of the Milky Way, has provided astronomers with new proof that Albert Einstein was right about gravity. As light escapes a region ...

Scientists have spotted the first hints that Einstein's formulation of gravity operates in the quantum realm.

The accelerating expansion of the universe could be explained by modifying general relativity so that gravity has mass – or so thinks a small group of physicists. Matthew Francis reports What lies ...

A preliminary analysis of data from the Gravity Probe B satellite has confirmed that the Earth's mass distorts the fabric of space and time as predicted by Einstein's theory of general relativity.

Cosmic photon timing measurements help constrain possible departures from relativity, with no violation detected in the ...