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

During the latter part of the 20th century, string theory was put forward as a unifying theory of physics foundations. String ...

“And that’s that.” Once while Einstein was working on the equations for general relativity, which would take him eight years to complete, he went mountain-climbing with the French-Polish ...

The behavior of spacetime is described by Einstein's equation (i.e. Einstein's field equations) from General Relativity. To ...

Einstein believed that black holes didn't really exist. But they do: that much we know. We don't know much else about them.

A new theory links gravity to quantum entropy and introduces the G-field, possibly explaining dark matter and cosmic ...

"General relativity is a powerful theory for describing ... In a framework of theories extending beyond Einstein's equations, ...