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

Italian astronomer Galileo Galilei peered through his newly improved 20-power homemade telescope at the planet Jupiter. He ...

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

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

1610: Astronomer Galileo Galilei observed four of Jupiter’s moons for the first time. 1955: Singer Marian Anderson became the first Black American to sing ...

The four "Galilean moons" were named after Italian astronomer Galileo Galilei, who is thought to have discovered them in 1610. As night falls, Jupiter will rise in the east-northeast, among the ...

Astronomer Galileo Galilei discovered it in 1610 ... Io, for example, follows an elliptical orbit around Jupiter, and the variation in distances from Jupiter (and consequently of Jupiter ...

It was probably during his time at Padua that his path first crossed with Galileo Galilei and the two men ... He took a look at Jupiter using this on December 29, 1609 according to the Julian ...