NASA's Voyager probes passed through Jupiter's system and snapped pictures of its largest moons, also known as the Galilean ...

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

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

The planets offer exciting views in April for both night owls and early risers. Plus, the Lyrid meteor shower peaks in ...

What kind of mission would be best suited to sample the plumes of Saturn's ocean world, Enceladus, to determine if this ...

But it hasn’t always been this way. Jupiter’s four largest moons – Io, Europa, Ganymede and Callisto – were the first ever ...

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

Fluorescent cave minerals are helping scientists explore how life could survive in harsh places like Europa. Far beneath ...

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

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 ...