00:00Then there's nuclear electric propulsion, where a reactor generates electricity to accelerate ions.
00:07Similar to ion engines, but with megawatts of power.
00:11Here, much less fuel is needed.
00:14Small ion engines nowadays can run for several years with just a few grams of fuel.
00:21NASA's Dawn spacecraft gained 11.5 kilometers per second.
00:2641.400 kilometers per hour with 425 kilograms of xenon.
