Io is the most volcanic body known to science, and researchers have puzzled over its history for years. A new report suggests it was born this way. This image revealing the north polar region of the ...

The most volcanic body in the solar system, Io is an infernal hellworld that constantly spits sulfurous magma into space. And a new study suggests that it’s been that way for a long, long time. The ...

Roughly 40 years ago, the Voyager 1 spacecraft sailed past one of Jupiter’s large moons, and it revealed something amazing: The rocky moon, called Io, is a volcanic champion, featuring the first ...