Jupiter’s four largest moons – Io, Europa, Ganymede and Callisto – were the first ever discovered orbiting another planet. They were spotted by Galileo Galilei more than 400 years ago, in 1610.

Visible in the early-morning sky today, Saturn’s two-toned moon Iapetus reaches superior conjunction just 1.4′ due south of Saturn. The proximity makes the now-11th-magnitude moon easier to find, as ...

There will be several chances to see the shadow of Saturn's largest moon, Titan, pass across the ringed planet's Earth-facing ...

Titan, Saturn's largest moon, casts its shadow across the gas giant in a series of rare shadow transits. This unique ...

A mere decade ago, astronomers knew of just 62 moons around Saturn. Today the ringed planet boasts a staggering 274 official satellites. That’s more than any other world in the solar system ...

Saturn has more known moons than any other planet. With 274 confirmed moons , it has more than all of the other planets combined. Its largest moon, Titan, is the second-biggest moon in the solar ...

"This monochrome view is the last image taken by the imaging cameras on NASA's Cassini spacecraft," NASA explains of the ...

Sometimes the best stargazing happens on ordinary nights. Late June 2025 showcases consistent cosmic rhythms: Venus is ...

Skywatchers in central Wisconsin can expect a stunning week ahead, with planetary pairings, moon phases and celestial ...

These new discoveries cement Saturn’s place as the winner of the Solar System’s moon competition, with more confirmed moons than all of the other planets combined. But it hasn’t always been ...

Titan’s shadow transits Saturn in a rare 2025 sky event Viewable with telescopes during pre-dawn hours this summer Next Titan ...