For over a century, quantum mechanics and Einstein’s general relativity have stood as the cornerstones of modern physics, yet ...

For the first time, a mathematical framework proves that Einstein’s theory of general relativity, which explains the ...

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

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

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.

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.

This NASA/ESA Hubble Space Telescope image reveals a tiny patch of sky in the constellation Hydra. The stars and galaxies depicted here span a mind-bending range of distances. The objects in this ...

but acting more like Albert Einstein predicted in his 1915 general theory of relativity. Cosmologists since 1998 have theorized that a mysterious invisible force dubbed dark energy was pushing the ...

TEGO revolutionizes gravitational wave detection with its tetrahedral spacecraft formation, improving sensitivity and ...