This temporal lag is a direct consequence of Albert Einstein’s Theory of General Relativity. The rule is simple: the weaker ...

Recent advancements in observational techniques have led to the capture of high-resolution images of black hole shadows, which are challenging the completeness of Einstein’s general theory of ...

110 years ago today, Albert Einstein published his General Theory of Relativity, which redefined the relationship between matter and gravity. Suddenly, our mysterious universe made a little more sense ...

In 1919, a total solar eclipse offered the only chance to test Albert Einstein's radical new theory of gravity, General ...

For close to a century, scientists have been trying to marry Albert Einstein’s General Theory of Relativity and quantum ...

A new study by researchers at the University of Amsterdam shows how gravitational waves from black holes can be used to ...

How confusing inevitability with reality built decades of paradox. What if general relativity never actually tells us that ...

Three thought experiments involving “demons” have haunted physics for centuries. What should we make of them today?

Ask someone on Earth for the time and they can give you an exact answer, thanks to our planet's intricate timekeeping system, ...

On Earth, knowing the time feels simple. Your phone pings the same second as a GPS satellite and an atomic clock in a lab.

Tracking the first astronauts’ visit to Mars won’t be as simple as watching a clock or marking days off of a calendar. Thanks ...