On this date, Jan. 7, 1610, astronomer Galileo Galilei, with a homemade telescope ... Europa and Ganymede became known as the Galilean moons of Jupiter. Learn more about NASA’s current mission ...

When Nasa's Juno probe approached Jupiter it caught sight of its four big moons - Callisto, Ganymede, Europa and Io. When Galileo Galilei's discovered these moons in 1610, it marked the birth of ...

The moon, discovered by Barnard, orbits Jupiter within the orbit of Io and was named Amalthea after the nymph who, according to Greek mythology, fed Zeus with goat's milk in his childhood. Images ...

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 ...

such as Jupiter’s moon Europa and planets beyond our solar system. Italian astronomer Galileo Galilei, known as the father of ...

What NASA's trip to Jupiter hopes to discover on Europa ... First discovered by Galileo Galilei in 1610, the moon has fascinated scientists for a long time. Numerous missions to Europa have ...