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

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

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.

A groundbreaking study combining the efforts of amateur and professional astronomers has redefined our understanding of ...

New research from a team of citizen scientists challenges the old idea that Jupiter's visible clouds are formed of ammonia ...

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

Hi, and welcome back to TechCrunch Space. Happy New Year! And...surprise!: This will be the last edition of TechCrunch Space ...

Jupiter's volcanic moon Io doesn't appear to ... a moon-wide ocean of molten rock. In the 1990s, NASA's Galileo mission performed magnetic induction measurements that suggested there was such ...

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 ...

There are 358 days left in the year. Today in history: On Jan. 7, 2015, masked gunmen stormed the Paris offices of Charlie ...