Most RTGs are built using plutonium-238 as their source of energy, which is not usable for nuclear power plants ... However, ...

25 and will shut off Voyager 2's low-energy charged particle ... of an ongoing effort to manage the gradually diminishing power supply of the twin probes. Launched in 1977, Voyagers 1 and 2 ...

Each Voyager spacecraft launched with a nuclear power source made of plutonium. It was the sensible choice—engineers knew all along that the probes would be traveling much too far from the sun ...

Voyager project manager Suzanne Dodd explained cutting each program is a matter of life-or-death for both machines. “Electrical power is running low,” Dodd said in a statement. “If we don ...

Sign up for CNN’s Wonder Theory science newsletter. Explore the universe with news on fascinating discoveries, scientific advancements and more. NASA’s twin ...

When they launched weeks apart in 1977, the Voyager probes carried identical sets of 10 science instruments. But over time, the probes’ power supply has gradually diminished. The Voyager ...