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

The Einstein field equations are a system of second order, non-linear, coupled differential equations in 4 variables. As you can imagine, solving such a system is not easy. If the system possesses a ...

Researchers say they may have achieved Einstein's vision of a "unified field theory" that can unite two of nature's ...

To account for gravity, time and space must be curved around massive objects. The math was very complex and the whole idea so strange that most people didn't accept it. But Einstein suggested ...

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

It took Einstein 10 years to make the theory work for gravity too, which is how general relativity gets its name. The theory is a series of equations defined by Einstein. These equations combine ...

a simplified form of Einstein’s field equations used for describing gravity in weaker fields, like those around galaxies. This equation typically has one well-known solution: gravity that ...

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

But ripples in spacetime seemed a little too far-fetched for Einstein. What's more, when he tried to write a mathematical formula to describe how gravity waves work, he couldn't do it. So Einstein ...

If gravity arises from entropy, scientists could unite Einstein's general relativity with the quantum realm while shedding light on dark matter and dark energy.