mileage on the engine increases. That wisdom does not hold true for NASA’s ion engine, whose odometer continues to spin to the delight of its owners. This little engine that could has more than made ...

CLEVELAND — A small robotic surveyor arrives to explore a near-Earth asteroid. Another robotic spacecraft is returning to Earth with a pristine comet surface sample. Meanwhile, a robotic explorer is ...

Sending an object to another star is still the stuff of science fiction. But some concrete missions could get us at least part way there. These "interstellar precursor missions" include a trip to the ...

Space debris is a growing threat to satellites and missions, with over 14,000 pieces already cluttering low-Earth orbit. To address this, Kazunori Takahashi, a researcher at Tohoku University in Japan ...

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Ion drives are renowned for their efficiency. They're extremely efficient compared to chemical rockets, so they're preferred for deep space missions where propellant supplies are critical. New ...

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