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 ...

A 19-year-old Egyptian university student called Aisha Mustafa has invented a propulsion device intended to offer spacecrafts a new method and cheaper means of energy consumption. The propulsion ...

A Hall thruster is a high-efficiency propulsion device using plasma that is used for various difficult space missions, such as SpaceX's constellation satellites, Starlink and NASA's asteroid probe, ...