Cosmic speed limits can be a major inconvenience but they've rarely stopped science fiction in its tracks.

New research suggests that evidence of the earliest black hole mergers in the universe may be imprinted on the fabric of ...

Scientists investigate gravitational wave memory theory by Einstein, searching for traces in the cosmic microwave background.

Einstein's theory of general relativity predicts gravitational memory, where space-time retains imprints from passing gravitational waves. Researchers are exploring if the cosmic microwave ...

If gravity arises from entropy, scientists could unite Einstein's general relativity with the quantum realm while shedding ...

By modifying Einstein's theory of general relativity, the center of a black hole with infinite curvature could be replaced by a highly curved but regular region of space-time, the researchers ...

We experience the flow of time because it’s a natural outcome of the basic laws of physics. But we may need to build a whole ...

Light was long considered to be a wave, exhibiting the phenomenon of interference in which ripples like those in water waves ...