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solar panels on spacecraft
Spacecraft operating in the inner Solar System usually rely on the use of photovoltaic solar panels to derive electricity from sunlight. In the outer solar system, where the sunlight is too weak to produce sufficient power, radioisotope thermoelectric generators (RTGs) are used as a power source.〔NASA JPL Publication: Basics of Space Flight, Chapter 11. Typical Onboard Systems , Electrical Power Supply and Distribution Subsystems, http://www2.jpl.nasa.gov/basics/bsf11-3.html〕
== History ==
The first spacecraft to use solar panels was the Vanguard 1 satellite, launched by the US in 1958. This was largely because of the influence of Dr. Hans Ziegler, who can be regarded as the father of spacecraft solar power.
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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