User:Ssbjy/Solar panels on spacecraft

=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 thermal generators (RTGs) are used as a power source.
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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. Of his 30 year tenure at Fort Monmouth (1947–1976), Ziegler spent 12 years in the top position as Chief Scientist.