Because Io is so close to its massive host planet, the moon is subjected to a tremendous gravitational pull as it orbits Jupiter once about every 42 hours, according to the Planetary Society.

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

The volcanic moon, which orbits the gas giant Jupiter, has long been written ... be living in the lava tubes that cover Io, allowing the lava from the planet’s core to seep to the surface.

Explore Io, the most volcanically active body in the solar system. When you purchase through links on our site, we may earn an affiliate commission. Here’s how it works. Io — Jupiter's fifth ...

The Io–Jupiter system is similar ... and raising broader questions about similar magma oceans within other moons and planets. But new measurements from Juno, coupled with archival data from ...

Related: Io: A guide to Jupiter's volcanic moon "Io is the ... close encounters with the three of the four largest moons of the planet, the icy moons Europa and Ganymede, and fiery moon Io.

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 ...

Because Io is so close to its massive host planet, the moon is subjected to a tremendous gravitational pull as it orbits Jupiter once about every 42 hours, according to the Planetary Society.

But Io is different ... bringing the spacecraft across the paths of the giant planet's largest moons. Juno flew close to Jupiter's largest moon, Ganymede, in 2021 and then visited Europa for ...

The spacecraft, Juno, has been circling Jupiter since 2016. Since then, it has orbited the planet to learn more about the gas giant and its moons, NASA said. Io, one of Jupiter's moons ...

Io is Jupiter's third-largest moon, spanning roughly 2,300 miles (3,700 ... which is driven by internal heating from our planet's molten metal core. Juno photos from the spacecraft's last three ...