SEATTLE -- Einstein was right. The speed of gravity matches the speed of light, according to astronomers who took advantage of a rare planetary alignment to measure one of the fundamental forces of ...

COLUMBIA, Mo. – Scientists have attempted to disprove Albert Einstein’s theory of general relativity for the better part of a century. After testing and confirming Einstein’s prediction in 2002 that ...

In Newtonian physics, gravity was thought to be instantaneous. But in Albert Einstein’s general theory of relativity, the speed of light, c, is the fastest possible speed for any interaction that ...

SEATTLE (AP) -- Einstein was right. The speed of gravity matches the speed of light, according to astronomers who took advantage of a rare planetary alignment to measure one of the fundamental forces ...

Under normal circumstances, your light cone (and thus your world line) remains fixedly pointed toward the future. However, we ...

New footage from the British fusion firm Tokamak Energy shows unbelievably hot plasma imprisoned in a magnetic field.

Astronomers have observed a supermassive black hole far from the center of a galaxy where it ought to be giving off bright ...

Vast has not released many details about the station, except that the station’s artificial gravity will be generated with centrifugal force and that it will serve as a research platform and machine ...

Experience the thrill of an alpine coaster with no brakes as it winds through steep turns, fast drops, and breathtaking mountain views. This full-ride run captures pure speed and precision, showcasing ...

Lucid Motors — the company behind the Air, one of the industry's longest range EVs – has just unveiled details about its first SUV, the upcoming 2025 Gravity. First, and probably of most interest to ...