But if the speed of light is identical for all observers, something else has to give: absolute time and space. Einstein concluded that the cosmos has no universal clock or common reference frame.

This dimple in space-time is the result of what we call a gravity well, and it was first described over 100 years ago by ...

A compound lens forged by two galaxies is helping astronomers get a bead on the Hubble Constant and dark energy.

"This unique lensing configuration allows us to constrain both the Hubble constant and dark energy parameters simultaneously ...

The cosmos continually surprises astronomers with phenomena that defy expectations. One such discovery, dubbed the “Einstein ...

British astronomers Arthur Stanley Eddington and Frank Watson Dyson showed that the ... which did not account for the curvature of time as well as of space. The question remains, however, as to ...

But if the speed of light is identical for all observers, something else has to give: absolute time and space. Einstein concluded that the cosmos has no universal clock or common reference frame.

We spoke with theoretical physicist Brian Greene about Einstein's theory of space-time. Many scientists believe space-time is a fundamental concept. But Greene thinks there might be something ...

Space, Time and Einstein shows the reader the excitement of scientific discovery and the beauty of theory in the search for answers to these fundamental questions. "A very clear and enjoyable book. A ...

The Einstein Probe (EP) space telescope, sent into space in January by China, has identified a transient celestial object exhibiting flickering behavior akin to fireworks, suggesting a potential ...