Nearly 415 years ago to the day astronomer Galileo Galilei discovered the moons surrounding Jupiter looking through his homemade telescope.

Europa was one of four moons discovered on Jan. 7, 1610, by astronomer Galileo Galilei. Speaking of Galileo, this photo was ...

Stephen Hawking was born exactly 300 years after Galileo Galilei died. Their death and birth, exactly 300 years apart on ...

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

Discover some of the greatest scientists of all time, featuring revolutionary minds like Albert Einstein and their ...