NASA's Voyager 1 spacecraft discovered active volcanoes on Jupiter's moon Io. Before Voyager 1 flew by Io, scientists ...

Italian astronomer Galileo Galilei, known as the father of modern astronomy, discovered Io on January 8, 1610. But the moon’s ...

Voyager 1 took this photo of Jupiter and two of its satellites (Io, left, and Europa) on Feb. 13, 1979. Io is about 220,000 miles above Jupiter's Great Red Spot; Europa is about 375,000 miles ...

Using data collected by NASA's Juno spacecraft as it flew past Jupiter's highly volcanic moon Io in late 2023 and again in ...

Voyager 1 and Voyager 2 are both exploring uncharted territory in interstellar space. Engineers at NASA’s Jet Propulsion Laboratory in Pasadena, California, sent a command for Voyager 1 to power down ...

"The Voyagers have been deep space rock stars since launch, and we want to keep it that way as long as possible!" ...