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

In March and April 2025, internet users shared a striking image that they claimed showed "Steeple Mountain," a massive point ...

Jupiter's volcanic moon Io doesn't appear to have a subsurface ocean of magma, resolving some issues about how Io's volcanoes erupt and raising broader questions about similar magma oceans within ...

For instance, the Hubble Space Telescope entered safe mode relatively recently as scientists worked on remedying some ...

Enjoy dark skies for evening observing, then catch a meteor shower and a planetary conjunction in the morning sky this week.

What can a sample return mission from Jupiter's volcanic moon, Io, teach scientists about planetary and satellite (moon) formation and evolution? This is what a recent study presented at the 56th ...

Additionally, Jupiter’s moon Io treks in front of the planet, dragging its shadow with it. The event starts around sunset in the Midwest, as Io moves in front of the disk around 8:30 P.M. EDT.

Juno is scheduled for an upcoming flyby of Jupiter on May 7, during which it is set to carry out a close approach of the Jovian moon Io at a distance of about 55,300 miles (89,000 kilometers).

But it hasn’t always been this way. Jupiter’s four largest moons – Io, Europa, Ganymede and Callisto – were the first ever discovered orbiting another planet. They were spotted by Galileo ...

This study builds off a 2021 concept study led by Dr. Steinbrügge that discussed using passive radar sounding to study Jupiter's volcanic moon, Io, which is the most volcanically active planetary ...