This new propulsion system could rewrite the rules of spaceflight—not to mention completely defy conventional physics.

Hungarian researchers have reported the persistent detection of an anomalous decay signal, interpreted as evidence for a new particle, X17, which would necessitate the existence of a fifth fundamental ...

Fifth force finder: artist's impression of the MICROSCOPE spacecraft. (Courtesy: CNES–D Ducros, 2016) New insights into whether a hypothetical fifth fundamental force exists have been gleaned by ...

Physics, especially the part about forces and motion, often feels like a maze of confusing concepts and formulas. If you’ve ever stared at a problem about an object moving or a force acting and ...