For example, general relativity predicts a black hole’s core is infinitely dense, while quantum physics suggests such infinities can’t exist.

Albert Einstein 's theory of general relativity —which explains gravity as the product of the distortion of space and time—may not be universally applicable.

The new book by Jeffrey Bennett introduces Einstein’s theory of relativity to a lay audience, explaining why black holes don’t suck and other phenomena.

Even extremely simple configurations in General Relativity cannot be solved exactly. Here's the science of why.

Einstein's theory of general relativity changed how physicists understood the universe in an instant. One hundred years later, they are still proving him correct.

In a recent article published in the journal Frontiers in Physics, researcher Piotr Ogonowski proposes an innovative method to reconcile two of the most important theories of modern physics: Albert ...

As new and powerful telescopes gather fresh data about the universe, they reveal the limits of older theories like Einstein's relativity.

Einstein's theory of gravity — general relativity — has been very successful for more than a century. However, it has theoretical shortcomings.

Einstein published a new theory of gravity—the theory of general relativity—in 1915. It would transform our understanding of physics forever. But it’s far from perfect.