When an object moves extremely fast—close to the speed of light—certain basic assumptions that we take for granted no longer ...

Over four months, March through June 1905, Albert ... special relativity and general relativity at the same time, says Weart, the cult of Einstein coalesced quickly. “And then came quantum ...

Machine learning helped show how harnessing the weird effects of Einstein’s special relativity could enable a new kind of ...

Researchers have developed a new quantum theory of gravity which describes gravity in a way that's compatible with the Standard Model of particle physics, opening the door to an improved understanding ...

This is no ordinary clock — it’s a highly precise instrument built to put Einstein’s theories of special and general relativity to the test. ACES will measure time with unmatched accuracy ...

Since the early days of general relativity ... a special linear case. The field equations then give the correct dynamics for the electromagnetic field. When Albert Einstein formulated his theory ...

The European Space Agency has launched two atomic clocks on a SpaceX rocket to the ISS to test Einstein's theory of ...

After fleeing Nazi Germany for the United States in 1933, Albert ... of special and general relativity completely changed how space, time, and gravity are fundamentally understood. The theory ...