Physicists have measured the smallest gravitational field ever recorded, in an experiment that could help in the search for a unified theory of physics. Of the four fundamental forces known to physics ...

Quantum scale gravity has long been a mystery to physics, but things could be starting to change. When you purchase through links on our site, we may earn an affiliate commission. Here’s how it works.

Physicist Markus Aspelmeyer vividly remembers the day, nearly a decade ago, that a visitor to his lab declared the gravitational pull of his office chair too weak to measure. Measurable or not, this ...