Physicists have long suspected that gravity might have a hidden quantum side, but for decades the idea has been more mathematics than measurement. A new proposal for a tabletop experiment now suggests ...

Monisha Ravisetti was a science writer at CNET. She covered climate change, space rockets, mathematical puzzles, dinosaur bones, black holes, supernovas, and sometimes, the drama of philosophical ...

Gravity's impact on bone cells—experiments heading to the International Space Station Mechanical engineers at the University of Michigan are tackling mysteries of bone density loss in space and on ...

GENEVA, SWITZERLAND—Physics tells us that a hammer and a feather, dropped in a vacuum, will fall at the same rate—as famously demonstrated by an Apollo 15 astronaut on the Moon. Now, CERN scientists ...

A number of experiments have been proposed to generate and witness gravitational entanglement, but Aziz and Howl’s work suggests that the presence of gravitational entanglement is not a ‘smoking gun’ ...

Artistic representation of the implemented photonic experiment in which entanglement between the polarizations of single photons is mediated by the independent degree of freedom of the photon path.