What exactly is gravity, and how does it work? From Newton’s early groundbreaking discoveries to Einstein’s revolutionary ...

Albert Einstein's General Theory of Relativity celebrates its 100th anniversary in 2015. See the basic facts of Einstein's relativity in our infographic here.

Discover how Einstein’s theory of special relativity reshaped physics by linking space, time, mass, and energy in a universe governed by the speed of light.

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.

Albert Einstein’s theory of relativity is famous for predicting some really weird but true phenomena, like astronauts aging slower than people on Earth and solid objects changing their shapes at ...

However, all attempts to blend general relativity and quantum physics necessarily introduce deviations from Einstein's theory. Therefore, Einstein's gravity cannot be the ultimate theory of gravity.

General Theory of Relativity explained: The beautiful simplicity (and weird time sags) of Einstein's 100-year-old masterpiece Carlo Rovelli's 'Seven Brief Lessons in Physics' outsold '50 Shades of ...

Over 100 years ago Einstein first described his general theory of relativity. This theory had a profound effect on physics and our understanding of the universe. But does it still matter today?

The accelerating expansion of the Universe, first observed in 1998, remains one of the most profound mysteries in modern physics. It challenges long-standing assumptions about the cosmos and has ...

The standard model, for instance, famously can't explain gravity, and general relativity doesn't really consider quantum phenomena. It's like a huge battle to be the ultimate theory.

Albert Einstein is famous for his theory of relativity, and GPS navigation and nuclear energy would be impossible without the equation e=mc2.