On this date, Jan. 7, 1610, astronomer Galileo Galilei, with a homemade telescope, noticed three points of light near Jupiter. Initially believing they were distant stars, Galileo’s repeated ...

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

such as Jupiter’s moon Europa and planets beyond our solar system. Italian astronomer Galileo Galilei, known as the father of modern astronomy, discovered Io on January 8, 1610. But the moon’s ...

If you find Jupiter, you’ll likely see four small ... around the Solar System’s largest planet. Discovered by Galileo Galilei in 1610, Io, Callisto, Europa and Ganymede are proving to be ...

Of course, when looking at Jupiter with a telescope or even a pair of binoculars, we also get a view of the famous Galilean satellites, so named because Galileo Galilei was the first to observe ...

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

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

On a cold January day in 1642, Galileo Galilei took his last breath ... but pockmarked with craters. Jupiter had its own moons, four of them (now called the Galilean Moons), revolving around ...