Sixty-seven orbits of Jupiter. Two close-ups of its moon Europa—where astrobiologists think microbial life may exist—21 flybys of far-out Callisto, and nine months in orbit around the biggest ...

But it won't be a star that will be keeping the moon company on this early winter's evening, but the largest planet in the ...

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 ...

NASA’s Juno mission found Io’s biggest volcanic eruption ever. The explosion was stronger than all Earth’s power plants ...

ForbesSee Jupiter Tonight: Why The 'King Of The Planets ... Ganymede and its shadow, Callisto, and Io in partial eclipse. Go used a Celestron C14 14-inch Schmidt-Cassegrain telescope mounted ...

In a celestial event known as a great alignment the five planets will be discernible with the naked eye, but to see Neptune ...

Europa Clipper - one of the most advanced spacecraft ever sent to another planet - aims to explore Jupiter's icy moon ...

Shortly before 8:30 P.M. EST, Io approaches Jupiter’s southeastern limb, just as Europa did last night. Europa is now far to the planet’s west, with Callisto on the same side, the latter ...