For generations, physicists have been searching for a quantum theory of gravity. But what if gravity isn't actually quantum at all?
This measurement is crucial to confirm that one of the assumptions of Einstein’s theory of gravity is valid.
Roger Babson wanted a “partial insulator, reflector, or absorber of gravity” — something, anything, that would stop or dampen it.
Seventy-five years after the anomaly's discovery, scientists have finally figured out why sea levels are so much lower here.
Sci-fi enthusiasts have long hoped that a substance called antimatter might experience gravity opposite that of ordinary matter. It doesn't.
Three fundamental forces matter inside an atom, but gravity is mind-bogglingly weak on those scales. Could extra dimensions explain why?
A clock, designed and built in Europe, ran hopelessly at the wrong rate when brought to America. The physics of gravity explains why.
We have two descriptions of the Universe that work perfectly well: General Relativity and quantum physics. Too bad they don't work together.
Particles behave differently when freed from the force of gravity. A new space factory aims to use this to synthesize pharmaceuticals.
Old coal mines can be converted into "gravity batteries" by retrofitting them with equipment that raises and lowers giant piles of sand.
Einstein's laws of gravity have been challenged many times, but have always emerged victorious. Could wide binary stars change all that?
Its apples taste bad, but institutions all over the world want a descendant or clone of the tree, anyway.
In the quest to measure how antimatter falls, the possibility that it fell "up" provided hope for warp drive. Here's how it all fell apart.
Though he renounced philosophy, Stephen Hawking's final theory of the universe redraws the basic foundations of cosmology.
Einstein’s theory of general relativity passes another test, with implications for dark matter and dark energy
The theory is accurate within at least one part in a quadrillion.
Maybe the brain isn't "classical" after all.
Bang bang all over the Universe.
Capacitors, acid batteries, and other methods of storing electric charges all lose energy over time. These gravity-fed batteries won't.