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 ...

For more than a century, gravity has been the immovable backdrop of modern physics, a force that can be described and exploited but never truly switched off. Now a former NASA engineer says he has ...

A recent paper by a Chinese mathematical physicist has stirred international attention, suggesting that the principles behind UFO propulsion could be explained by advanced antigravity technology. The ...