An Einsteinian view of gravity, a curvature in spacetime caused by mass and energy. (ESA/C.Carreau) Quantum mechanics and ...

Physicists have proven a 100-year-old prediction of relativity by showing that Einstein's equivalence principle holds at ...

For more than a century, quantum mechanics and Albert Einstein’s theory of general relativity have each passed countless tests, but physicists have struggled to reconcile the two. Now, scientists in ...

A new experiment using ultracold rubidium atoms found that a quantum object in free fall behaves consistently with Einstein's ...

An international team including Nobel Prize-winning physicist Professor Sir Roger Penrose has observed a long-predicted ...

Physicists including Roger Penrose observed gravity’s effect on a falling quantum object for the first time, confirming ...

Just over a week ago, European physicists announced they had measured the strength of gravity on the smallest scale ever. In a clever tabletop experiment, researchers at Leiden University in the ...

Physicists observed a quantum state change in ultracold atoms. This change matched Einstein's equivalence principle for a ...

There is a glaring gap in our knowledge of the physical world: none of our well-established theories describe gravity’s quantum nature. Yet physicists expect that this quantum nature is essential for ...

The weak equivalence principle (WEP) is central to Einstein's general relativity. It posits that gravity must accelerate ...