This line engraving of Galileo depicts the astronomer alongside a drawing that shows Earth’s orbit around the Sun, as well as the Moon’s orbit around Earth. Line engraving by Boutrois ...

Galileo Moon Drawings. If the end of Galileo's life bore the poignant stamp of art, so did its beginning. To this day, on the facade of a Florentine palace, a plaque commissioned by Galileo's disciple ...

Uncover the mystery behind Saturn’s iconic rings. ExtremeTech explains their origins and the science of our solar system.

On this date, Jan. 7, 1610, astronomer Galileo Galilei, with a homemade telescope, noticed three points of light near Jupiter ...

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 ...