Special relativity applies to situations involving high speeds, massive energy, and vast distances — all in the absence of gravity. For gravity, Einstein expanded on this work a decade later ...

Once again, scientists have shown that Albert Einstein's theory of special relativity is right — this time, thanks to a particle detector buried deep beneath Antarctica. Scientists from the 1 ...

Also, we have notions of kinetic and potential energy that remain with us from Newton's old formulation, and special relativity, which tells us that the speed of light in a vacuum is the ultimate ...

Right Again, Einstein: Special Relativity Works Even in Ghostly High-Energy Neutrinos. ... high-energy particles would deviate from the behavior predicted by the theory of special relativity.

The idea of a particle that races faster than light has long fascinated physicists. Known as the tachyon, it was originally dreamed up to help untangle paradoxes in quantum theory and relativity.

There may be an infinite amount of energy locked in the vacuum of space-time. So could we ever harness this energy for anything useful?

Later in 1905 comes an extension of special relativity in which Einstein proves that energy and matter are linked in the most famous relationship in physics: E = mc 2.

Special relativity tells us that no privileged reference frames exist. If I am traveling at 60 mph (100 km/h), and you are standing still, our difference in velocity is 60 mph.

N othing can travel faster than the speed of light. The problem with trying to surpass it is that as you go faster, the more kinetic energy you have. But relativity tells us that energy is the same as ...

One was on Brownian motion, one earned him the Nobel Prize in 1921, and one outlined the foundations of special relativity. It became known as Einstein’s annus mirabilis or wonderous year.

Once again, scientists have shown that Albert Einstein's theory of special relativity is right — this time, thanks to a particle detector buried deep beneath Antarctica. Scientists from the 1 ...