Physicists have long struggled with their goal of making gravity a quantum force. A radical post-quantum approach might solve ...

Researchers at Singapore's Centre for Quantum Technologies have developed a highly accurate lutetium-based atomic clock. This ...

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

Einstein’s general theory of relativity—the idea that gravity is matter warping spacetime—has withstood over 100 years of scrutiny and testing, including the newest test involving supermassive black ...

Scientists have spotted the first hints that Einstein's formulation of gravity operates in the quantum realm.

A growing body of theoretical and experimental work in physics is converging on a striking possibility: time, the dimension humans experience as a constant forward flow, may not be a fundamental ...

In 1998, a gentleman by the name of John Titor arrived from the future, or so he said. In his timeline, as he claimed, ...

The Earth orbits the Sun. Then why doesn't the Earth fly away from the Sun into the depths of space? The one who provided the ...

The accelerating expansion of the universe could be explained by modifying general relativity so that gravity has mass – or so thinks a small group of physicists. Matthew Francis reports What lies ...

Einstein revolutionised our understanding of gravity in 1915. With gravity wave experiments and a new view of quantum theory, 2015 promises more ONE of the defining anniversaries in 2015 will be the ...

Differences in perspective② Breakdown of calculations (Occurrence of infinity)3. In what situations does this cause ...