Traditional black holes, as predicted by Albert Einstein's theory of General Relativity, contain what are known as ...

A rare Einstein ring spotted near our galaxy offers a unique chance to test Einstein’s general relativity and study the ...

The grandfather paradox is just one of the thorny logical problems that arise with the concept of time travel. But one physicist says he has resolved them.

Mathematical equations have shaped our understanding of the universe, and these nine have played a key role in changing the world.

Euclid space telescope sent some images back to Earth during an early testing phase. While reviewing the pictures, astronomer ...

A Euclid space telescope has spotted a rare halo of bright light known as an "Einstein Ring" in a galaxy not so far, far away.

Emmy Noether showed that fundamental physical laws are just a consequence of simple symmetries. A century later, her insights ...

On 25 November 1915, Albert Einstein presented his general theory of relativity at the Prussian Academy of Sciences. This theory is still considered to be the most important idea in modern physics.

Vanderbilt University physicist Lorenzo Gavassino isn't so sure this is as big an obstacle as time-traveler pessimists have ...

Tim Ellis, cofounder and CEO of Relativity Space, is competing against SpaceX in the booming space launch business and reinventing manufacturing in the process. Relativity CEO Tim Ellis on the exc ...

Startup Relativity Space is developing the world's first 3-D printed rocket, which it says is cheaper and quicker to manufacture than conventional rockets. Ahead of the company’s first orbital ...