Earlier this week, Saturn gained a whopping 128 new official moons, as the International Astronomical Union recognised ...

These pinpricks of light are actually Jupiter's four largest moons, now known as the Galilean moons: Io, Europa, Ganymede, and Callisto. Many of these celestial orbs are as remarkable as Jupiter ...

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.

Europa is the sixth largest satellite in our Solar System and the smallest of Jupiter’s four Galilean moons. Discovered by ...

When it comes to places to search for life, Io hasn’t really been at the top of the list. Other moons of Jupiter, like Europa and Ganymede, have been considered far more likely candidates.

If you find Jupiter, you’ll likely see four ... Discovered by Galileo Galilei in 1610, Io, Callisto, Europa and Ganymede are proving to be fascinating topics of study for modern day astronomers.

The vernal equinox occurs as Mercury stands still in Pisces and several of Jupiter’s moons transit in the sky this week.

The shadows of Ganymede and Europa cross the face of Jupiter together March 11/12. At the time shown here, Io has just emerged from eclipse within Jupiter’s shadow; Callisto lies farther east.

Saturn surpasses Jupiter with 128 newly discovered moons, becoming the planet with the most moons in our solar system.

NASA's Europa Clipper Sails Toward Ocean Moon of ... Sep. 19, 2024 — By staring into the hellish landscape of Jupiter's moon Io -- the most volcanically active location in the solar system ...