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 ...

In January 1610, astronomer Galileo Galilei spotted what he thought were four small stars tagging along with Jupiter. These pinpricks of light are actually Jupiter's four largest moons ...

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

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

orbits Jupiter from about 1.2 million miles away. The rocky world, discovered in 1610 by Italian Renaissance man Galileo Galilei, has earned a reputation as the most heavily cratered moon in our ...

Galileo Galilei made an important discovery about ... and so they were the ones to eventually call it Mars. Jupiter is the biggest planet in our Solar System, and it gets its name from the leader ...

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

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 ...

Galileo Galilei was the founder of modern physics ... He saw mountains on the Moon (very anti-Aristotle this), then satellites orbiting Jupiter, which he mapped with such accuracy that his ...