On January 7, 1610, the Italian astronomer Galileo discovered three of Jupiter's moons: Callisto, Europa and Io. When he ...

On Jan. 7, 1610, Galileo discovered four moons revolving around Jupiter — a discovery that would change his life forever. These four moons are Jupiter’s largest satellites — lo, Europa, Ganymede and ...

To celebrate 30 years of the Galileo global navigation system, the European Space Agency created the following video.

Galileo's place in history is legendary: a titan among the earliest of the modern scientists. The first to use the telescope for astronomy, Galileo observed: Yet, as Thony Christie points out for Aeon ...

Europe's Galileo satellite navigation system largely regained service Thursday, a full week after a mass outage began on July 11. The European Global Navigation Satellite Systems Agency, known as GSA, ...

False color image of Jupiter's great red spot, as seen by Galileo's camera using near-infrared filters. NASA/JPL/Cornell University Galileo, the first spacecraft to orbit any of the large planets ...

Atlas Obscura on Slate is a new travel blog. Like us on Facebook, Tumblr, or follow us on Twitter @atlasobscura It is a remarkable bit of irony, the finger: venerated, kept in a shrine, subjected to ...

This past weekend marked the 450 th anniversary of Galileo's birth. In articles celebrating his contributions to science, Clara Moskowitz at Scientific American wonders what he'd make of contemporary ...