As the innermost of Jupiter’s Galilean moons, Io offers a glimpse into some of the most extreme geologic phenomena in the solar system. Roughly the size of Earth’s Moon, Io’s surface is ...

Jupiter moon of Io is famed for its volcanoes. NASA just spotted the most powerful one yet Not only was the hot spot larger than Earth’s Lake Superior, but it also was seen belching out ...

If you look at the gas giant with a telescope as it’s rising, you’ll spot three of its Galilean moons: Io alone to the west, with Ganymede (closer) and Callisto (farther) to the east.

The Galilean moon Io has already lost sextillions of tons of sulfur, and will someday run out of this element. ... Jupiter’s moon Io has likely been active for our solar system’s entire history.

Io is Jupiter's fifth moon and its third-largest. ... In 2024, NASA's Europa Clipper mission plans investigate the habitability of another Galilean moon, Europa. Additional information .

On March 9, 1979, Linda Morabito discovered a volcanic plume on Io, a moon of Jupiter, in one of the photos from Voyager 1. She wrote, “I could feel tears begin to roll down my face at the sight ...

On the fiery Io, the innermost and third-largest of Jupiter’s four Galilean moons, Juno's observations have provided more insights about its incessant volcanic activity.

As the innermost of Jupiter’s four Galilean moons, Io is stuck between the planet’s immense gravitational force and the gravitational tug of its sister moons Europa and Ganymede.

In new images captured by NASA's Juno spacecraft, fiery volcanic activity is seen erupting across Jupiter's moon, Io.. Io is the third-largest of Jupiter's four Galilean moons and is the most ...

As the innermost of Jupiter’s four Galilean moons, Io is stuck between the planet’s immense gravitational force and the gravitational tug of its sister moons Europa and Ganymede.