Do you know how power supply is generated on Voyager1 and Voyager2? Voyager1 and Voyager2 equiped with a radioisotope thermoelectric generator (RTG), which converts heat into electricity and supply it to the spacecraft. Voyager1 and Voyager2 were launched on Sept 5, 1977 and Aug 20, 1977 to explore objects in outer space. Voyager 1 has crossed our solar system and is currently exploring in outer space. While Voyager 2 is currently exploring the outer limit of the solar system. If you want to know their distance from earth, then visit here https://voyager.jpl.nasa.gov/mission/status/ Satellites are powered by solar panel because they get suffiecient sunlight to generate electricity. But Voyagers are currently outside the solar system where they are not getting enough sunlight. [The image is sourced from news.cornell.edu] #Space