In this video, we break down the theory of general relativity, revealing how mass and energy bend the fabric of space and time. Discover how this groundbreaking theory explains everything from the way ...

Einstein put forth special relativity, which explains motion at near-light speeds. Although there are many consequences of Special Relativity, this complex theory consists of only two postulates ...

In 1907, Albert Einstein had his “happiest thought” — people in free fall do not feel their own weight. This simple idea laid the foundation for his general theory of relativity, which ...

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.

Einstein's theory of relativity revolutionized how we view time, space, gravity and spaceship headlights.

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.

Einstein's relativity theory is deceptively simple and consists of just three rules. The first says every time you measure an object's speed, its momentum, or how it experiences time, will always ...

General relativity is the more fundamental theory, and it is very simple to understand special relativity in terms of general relativity, so I will describe it first.<BR><BR>General Relativity: A ...

The general theory of relativity, Einstein asserted, was now complete. The month leading up to the historic announcement had been the most intellectually intense and anxiety-ridden span of his life.