<P> 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 . </P>
<P> 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 . </P>
where do satellites in outer space derive their electrical energy from
where do satellites in outer space derive their electrical energy from
photovoltaic solar panels to derive electricity from sunlight
photovoltaic solar panels to derive electricity from sunlight