对深空探测来说,飞船能依靠的只有太阳能与核能。飞船距离太阳越远,阳光越是微弱,太阳能电池板的发电能力就越低;为保证飞行器的能量供应,就需要应用放射性同位素电池(核电池)。这种电池不仅不受光照影响,还能应对真空、极冷、极热、宇宙辐射等恶劣的外部环境。目前,“好奇号”火星越野车已经采用了全核动力,我国的“嫦娥三号”也将采用核能保温。 For deep space exploration, the spacecraft can only rely on solar energy and nuclear energy. The farther the spacecraft is from the sun, the weaker the sunlight, the lower the solar panel’s generating capacity. In order to ensure the energy supply of the aircraft, a radioactive isotope battery (nuclear battery) is required. This battery is not only affected by light, but also deal with the vacuum, extreme cold, extreme heat, cosmic radiation and other harsh external environment. At present, “Curiosity ” Mars SUV has adopted the full nuclear power, China “Chang’e III ” will also use nuclear energy insulation.