Every time a coffee mug drops, a satellite orbits or an astronaut floats, we are watching the same phenomenon play out under ...

The accelerating expansion of the universe is usually explained by an invisible force known as dark energy. But a new study ...

There is no secret NASA document titled "Project Anchor," and there's no way to turn off gravity. "Gravity is an inherent property of space-time," Meyers explained, closing the book on one the year's ...

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 ...