Astronomers detected in unprecedented detail a collision between two black holes. Their observations confirm predictions made ...

Einstein proposed and published his theories of special and general relativity in 1905 and 1915. The concepts are monumental ...

Einstein’s theory of relativity reveals a mind-bending truth – in the right conditions, time itself slows down. This isn’t ...

In the 1920s, Albert Einstein and one of his former students developed a way to keep food cold using heat. It was designed to ...

GPS satellites experience time differently than we do on Earth. Without compensating for this strange effect predicted by ...

Ten years after the first gravitational wave detection, a new suite of instruments has captured distinctive ringing signals ...

Is time something that flows — or just an illusion? Exploring space-time as either a fixed “block universe” or a dynamic ...

Fragments of energy may be the fundamental building blocks of the universe. The theory combines the ideas of particles and waves into a concentration of energy that flows throughout space and time.

From Einstein's theory of relativity to cutting-edge explorations in quantum mechanics, scientists have proposed various theoretical paths to achieve time travel. Although most remain in the realm of ...

The findings resolve a long-standing problem in fundamental physics. Scientists at Hiroshima University have created a ...

Ten years after scientists first detected gravitational waves emerging from two colliding black holes, the LIGO-Virgo-KAGRA ...