“That process is going on throughout the solar system, as well as in exoplanets,” Katherine de Kleer, a planetary astronomer at Caltech and the study’s lead author. “We study Io to better ...

Given just how big space is, the solar system seems like it shouldn't be too mysterious. But there are actually plenty of ...

"Io represented a big mystery because its surface doesn't hold a record of its history the way that the surfaces of less active moons do." The solar system's most volcanic body, the Jupiter moon ...

A recent study found that Jupiter was once twice the size that it is now, making it big enough to swallow up 2,000 Earths.

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.

“Io is one of the most intriguing objects in the whole solar system,” said study coauthor Scott Bolton, Juno principal investigator and an associate vice president at the Southwest Research ...

Solving this mystery could also help reveal how Io’s lunar sibling Europa and other icy moons manage to harbor vast, potentially habitable liquid-water oceans despite the outer solar system’s ...

Io is the innermost of the four giant Galilean moons that orbit the solar system's largest planet, Jupiter. But while the outer three are — at least outwardly — placid, frozen worlds of rock ...

The last sight you see before dying on the moon Io is the most volcanic world in the solar system; its surface is peppered with hundreds of volcanoes, some spewing sulfurous plumes hundreds of ...

NASA is sending the first spacecraft to fly near Jupiter’s moon Io Thursday, kicking off the first of several flights in a mission to study the most volcanic place in the solar system.

While our moon is relatively calm, Io is considered to be the most volcanically active world in our solar system. And while Earth, of course, has plenty of active volcanoes of its own, eruptions ...

Jupiter, the largest planet in the solar system, was 2 to 2.5 times bigger in ... Batygin told Mashable. As Io migrates away from Jupiter, its gravity causes a kickback — sort of like how ...