For more than a century, gravity has been the immovable backdrop of modern physics, a force that can be described and ...

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 ...

If humanity ever wants to escape the solar system, we’re going to need a faster-than-light engine. Enter: the warp drive. While such a drive pushes the limits of known physics, a new study ponders ...