NASA's Juno spacecraft found Io’s surface is as smooth as glass, just like volcanically created obsidian glass ...

The surface of Io, one of Jupiter's many moons, is an especially hostile environment – even for space. Scientists recently observed its atmosphere completely collapse for the very first time.

What can a sample return mission from Jupiter's volcanic moon, Io, teach scientists about planetary and satellite (moon) ...

"These energized electrons then interact with Io's atmosphere and surface, ionizing and exciting atoms and molecules and even creating aurora." In the 1990s, NASA's Galileo mission discovered the ...

Io is an incredibly active and extreme place, with glistening lava lakes and volcanic eruptions shooting sulfur and magma to huge heights.