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

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 ...

Io is an incredibly active and extreme place, with glistening lava lakes and volcanic eruptions shooting sulfur and magma to ...

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

Catch two transits of Io, spot sparkling star clusters, and view Mars at aphelion while the April Full Moon lights the sky ...

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

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 ...

How can Uranus be used to indirectly study its moons and identify if they possess subsurface oceans? This is what a recent ...

There are radioactive elements within the moons of Jupiter, but much of their heating comes from another source. Volcanism on Io results from the flexing of the solid material of the moon itself.

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 ...