A prototype ion engine that uses lithium vapor as a propellant has aced its first tests, achieving 25 times more power than previous ion engines.
The first human Mars explorers won’t have it easy. Every additional day in deep space will increase their exposure to deadly ...
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NASA tests new, super powerful engine
NASA just nudged its Mars ambitions forward with a lab test of a new ion engine that vastly outmuscles anything it's flown ...
NASA just tested a blazing-hot plasma engine that could help carry humans to Mars.
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