Portal’s heat exchanger thruster, known as Flare, fires up during a test in a vacuum chamber. (Portal Space Systems Photo) Bothell, Wash.-based Portal Space Systems says it has successfully tested its ...
A prototype ion engine that uses lithium vapor as a propellant has aced its first tests, achieving 25 times more power than ...
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 ...
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NASA’s new nuclear engine could transform deep space
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 ...
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Solar activity makes space junk crash to Earth faster
Scientists studied how space junk moved in orbit over a 36-year span, finding that increased solar activity caused it to fall ...
Rotating detonation rocket engines work differently than traditional rockets to maximize thrust while using less fuel—an ...
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