Is satellite work without solar power ?

“I don’t think the human race will survive the next thousand years, unless we spread into space. There are too many accidents that can befall life on a single planet. But I’m an optimist. We will reach out to the stars.” Yes without solar panel satellite can work, RTG battery using for power supply appcens of solar panel or when space missions are to far away from Sun like after panet Jupiter we used a RTG battery operated satellite for space missions in this RTG stands for radioisotope Thermoelectric generator which is plutonium 238 as a fuel which is radio active material and when it dicay it produces heat and then thermonuclear cupple activated and which converts this heat to a electricity which help to running the all satellite function.

New horizon satellite — Stephen Hawking, theoretical physicist and cosmologist