This close-up view of Jupiter was taken by Voyager 1. It shows the great red spot—an anticyclone three and a half times the size of Earth, as well as the clouds swirling around it. The image was ...

To help them conserve energy, mission operators at the agency's Jet Propulsion Laboratory (JPL) are shutting off one scientific instrument on Voyager 1 and another on Voyager 2. The move will buy ...