I’ve grown up with rockets that burn chemical fuel, but NASA’s next big leap in propulsion could make those engines look as dated as steam trains. By turning to nuclear power in space, the agency is ...

Jeff Thornburg helped turn a government research project into SpaceX’s most powerful rocket engine. Now, he’s trying to do the same thing at his startup Portal Space Systems, which is taking an idea ...

"This marks the first time in the United States that an electric propulsion system has operated at power levels this high, reaching up to 120 kilowatts." When you purchase through links on our site, ...

China is advancing the Sun Chasing project to develop space-based solar power systems that collect energy in orbit and beam it wirelessly to Earth or spacecraft for continuous power supply. Early ...