Saturn, Jupiter’s outer neighbour, currently has 83 known satellites. The four larger moons mentioned above, also known as the 'Galilean moons', account for 99.997 percent of the total mass of Jupiter ...

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 ...

Io, the innermost of Jupiter’s four Galilean moons, is the most volcanic world in the solar system, giving it a dynamic mix of yellows, reds, and browns. Hyperion is one of the strangest moons ...

Galileo Galilei, with a homemade telescope, noticed three points of light near Jupiter. Initially believing they were distant stars, Galileo’s repeated observations over several nights and realized ...

The goal is to reach Europa, the smallest of the planet's four Galilean moons, in April 2030 ... but will be much faster than traveling straight to Jupiter. Gravity assists have become common ...

Sunrise: 6:56 A.M. Sunset: 9:17 P.M. Moonrise: 4:25 A.M. Moonset: 1:42 P.M. Today starts a run of events taking place around mighty Jupiter, as its Galilean moons show off while they dance in ...

Oc­cul­ta­tion of Jupiter and the Galilean moons – Io, Eu­ropa, Ganymede and Cal­lis­to – by Deimos, ob­served dur­ing Mars Ex­press or­bit 22,859, on 14 Febru­ary 2022. The dis­tance from Mars ...

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 ...

The European Space Agency is preparing a spacecraft to embark on an eight-year-long journey to Jupiter, where it will study the gas giant’s moons for ... complete at least four orbits of the ...