Looking for a sky event this week? Check out our full Sky This Week column. March 13: Look into the eyes of the Owl A transit ...

Add Yahoo as a preferred source to see more of our stories on Google. NASA’s Juno spacecraft captured the most powerful volcanic eruption ever seen on Jupiter’s moon Io. (CREDIT: NASA / JPL / ...

On March 8, 1979, NASA's Voyager 1 spacecraft discovered active volcanoes on Jupiter's moon Io. [‘On This Day in Space’ Video ...

While Jupiter's main aurora has a great deal of hot materials, a snapshot showed a cold spot in Io's auroral footprint.

Io and its shadow cross Jupiter overnight tonight with only 20 minutes between them. Finding Jupiter is likely familiar by now, as the gas giant shines brightly in Gemini near the heads of the Twins.

On October 10, 2025, a double transit event of Jupiter's moons, Io and Europa, along with their shadows, is observable across the planet's disk. This predawn phenomenon begins at 4:30 A.M. EDT with ...

Using the Webb telescope, scientists discovered an unexpectedly cold, dense region within Io’s auroral footprint in Jupiter’s northern lights.