Recent flybys of the fiery world refute a leading theory of its inner structure—and reveal how little is understood about ...

NASA's Juno mission has gathered new findings after peering below Jupiter's cloud-covered atmosphere and the surface of its fiery moon, Io. Not only has the data helped develop a new model to ...

Distance from Jupiter: Io is the fifth moon from Jupiter. Its average orbital distance is about 262,000 miles (422,000 km). Io takes 1.77 Earth -days to orbit Jupiter.

Lava lakes on Io's surface had previously been found in a few locations, such as the 127-mile-long lake Loki Patera. This study reveals that these lakes are extremely common on the moon, and the ...

Jupiter's moon Io is a volcanic hellscape—and has been since the solar system began. Io is the most volcanic body known to science, and researchers have puzzled over its history for years.

Jupiter's volcanically active moon Io may possess a global ocean of magma underneath its surface, as well as mysteriously warm poles, a new study finds.

Jupiter moon of Io is famed for its volcanoes. ... In December 2023, Juno came within about 930 miles of Io's surface – equal the distance from New York City to Orlando, Florida.

NASA’s Jupiter probe had its close encounter with Io on Saturday, December 30, flying at a distance of 930 miles (1,500 kilometers) away from its hellish surface.

Flybys of Jupiter’s moon Io, the only known volcanic world in our solar system, have captured images of a massive lava lake and a towering Matterhorn-like mountain.

S cott Bolton’s first encounter with Io took place in the summer of 1980, right after he graduated from college and started a job at NASA. The Voyager 1 spacecraft had flown past this moon of Jupiter, ...

The agency has scheduled another close flyby of Io for Feb. 3, when Juno is again expected to pass at about the same distance from the moon's surface as it did Saturday. Juno's mission is set to ...