"The singularity is the most mysterious and problematic part of a black hole. It's where our concepts of space and time ...

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

Is there a time of day or night at which nature's heaviest elementary particle stops obeying Einstein's rules? The answer to ...

General relativity states that all matter in a black ... although this is where the laws of quantum mechanics actually apply. Concepts of cause and effect do not apply in black holes The theory ...

and the law of the photoelectric effect, for which he went on to win the Nobel Prize in 1921. Expanding his special theory, Einstein’s general theory of relativity states that what we perceive ...