radioisotope

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Solar panels will supply power and radioisotope heater units will help it withstand the extreme cold on Mars.
太阳能电池板将提供电力，而放射性同位素加热器单元能够经受火星的严寒气候。
The team just unveiled a new photovoltaic energy conversion system that can be powered by heat, the sun’s rays, a hydrocarbon fuel, or a decaying radioisotope.
这个小组前不久推出一款由热量、阳光、烃类燃料或正在衰变的放射性同位素驱动的新型光伏能量转换系统。
During these periods of “sleep,” New Horizons is powered by a single radioisotope thermoelectric generator and uses less power than a pair of 100-watt household light bulbs.
在这些“睡眠”时期中，新视野号仅仅靠一台放射性同位素热电发生器驱动，而它的耗能还不及一制100瓦的家用电灯泡。

The suggestion is to use similar radioisotope thermoelectric generators like the one found in the Curiosity rover.
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As the radioisotope decays, it produces heat energy that is converted by thermoelectric materials into the electricity that powers the space probe.
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Finally, a 1 kW electric radioisotope power supply running on Plutonium 238 (Pu-238) would kick in to power an ion thruster engine.
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