A 10-year effort to measure gravity, a fundamental force in the universe, has failed to come up with a conclusive answer.

For over a century, physicists have been trying to answer one of the most profound questions in science: Can gravity be unified with the quantum world? While the main model describes the ...

After a 10-year effort, physicists got a value for “Big G” that does not settle the debate over one of nature’s hardest numbers to nail down.

Scientists are grappling with a cosmic mystery: why does the Universe behave differently on massive scales compared to our ...

From reverse waterfalls to gravity-defying hills, some places on Earth seem to challenge physics. These strange spots attract ...

Measuring the strength of gravity is extraordinarily difficult, and different experiments have always disagreed – but a new ...

There was a secret inside the envelope in the hands of Stephan Schlamminger, one of the world’s leading experts in experimental tests of gravity. He appeared to be on the verge of opening the envelope ...

As far as we know, our physical world is governed by four fundamental forces: electromagnetism, weak and strong nuclear forces, and gravity. Apart from playing with bar magnets or marveling at the ...

Scientists are closer to unravelling the mysterious forces of the universe after working out how to measure gravity on a microscopic level. Experts have never fully understood how the force works in ...

A longstanding goal in physics has been to link general relativity with quantum theory and so unify the forces of nature. Theories of quantum gravity, however, are plagued by the weak theoretical ...

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