After making the closest Io flyby of any spacecraft in more than 20 years, NASA's Juno probe returned amazingly detailed imagery that will help scientists discover the source of the small moon's ...

The result may help provide insight into how the moon renews its surface so quickly, as well as how heat moves from its deep interior to the surface. “Io’s volcanos, lava fields, and subterranean lava ...

Io’s volcanoes are the only known active magma volcanoes in the solar system other than those on Earth. Io produces about 100 times more lava each year than all the volcanoes on Earth. While Earth’s ...