On April 20, a satellite conceived in the 1960s to test two aspects of Einstein’s general theory of relativity finally roared into space from Vandenberg Air Force Base in California. Aside from two ...

Wired Science is combing NASA's enormous image archive to bring you some of its most inspiring, awesome and weird photos. This 1965 shot of the Reduced Gravity Walking Simulator is one of our ...

In a development at the intersection of quantum mechanics and general relativity, researchers have made significant strides toward unraveling the mysteries of quantum gravity. This work sheds new ...

According to legend, Galileo dropped weights off of the Leaning Tower of Pisa, showing that gravity causes objects of different masses to fall with the same acceleration. In recent years, researchers ...

In this historical photo from the U.S. space agency, a test subject is suited up for studies on the Reduced Gravity Walking Simulator on Dec. 11, 1963. The simulator is located in the hangar at ...

An extreme pair of superdense stars orbiting each other has put Einstein's general theory of relativity to its toughest test yet, and the crazy-haired physicist still comes out on top. About 7,000 ...