For decades, scientists have dismissed the idea of reactionless propulsion—the concept of generating thrust without expelling propellant—as a fantasy that defies the laws of physics. But Charles ...

An engineer who once worked with NASA says he has built a machine that can push against gravity without burning a drop of fuel, a claim that, if true, would upend how rockets, satellites, and even ...

Researchers from NASA's Jet Propulsion Laboratory in Southern California, along with academic institutions and private businesses, are developing the first space-based quantum gravity sensor.

Discovering a machine that could somehow produce thrust without releasing propellant would be a game-changer for human space travel. There’s just one problem—such a device would defy the laws of ...

World’s largest electric propulsion pointing mechanism will enable Aerojet AEPS Thrusters on the Maxar-built Power and Propulsion Element (PPE) of NASA’s lunar space station. The Gateway space station ...