General relativity stands as one of the bedrock theories in modern physics. Its strange view of relative time and space has been confirmed by countless experimental and observational tests, from ...

Einstein's special relativity emerged independently, challenging misconceptions about the Michelson-Morley experiment's ...

A new physics paper proposes modifications to Einstein’s theory of relativity that could solve one of the biggest issues ...

Three physicists have proposed a modification to Einstein’s general relativity that, if confirmed, could eliminate the ...

In a recent paper [1], the author shows that in spacetime physics, the Selleri transformations (STs) are viable alternatives ...

One hundred years ago this Wednesday, Albert Einstein gave the last of a series of presentations to the Prussian Academy of Sciences, which marks the official completion of his General Theory of ...

Ryan Kavanaugh’s plan to turn around his struggling mini-studio Relativity Media is on shaky ground. The brash mogul led the company out of Chapter 11 bankruptcy proceedings in March with his eye on a ...

3D-printing specialist Relativity Space is building a second rocket factory in Long Beach, California, where the company will move its headquarters. At more than 1 million square feet, the former ...

3D-printing rocket builder Relativity Space closed a $500 million round of new capital which CEO Tim Ellis said now gives the company a "war chest" to further advance its technology. "This really ...

Relativity Space is on track to launch its first rocket at the end of the year. But that hasn’t stopped the company from looking ahead to the future. On Tuesday, the Los Angeles-based rocket startup ...