NASA’s Voyager 1 spacecraft—currently cruising in interstellar space—got in touch on April 20 with usable data on its health and status. That’s a triumph after a glitch in November caused ...

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 ...