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

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

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

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

Discover the best telescope deals on the market this holiday season. Looking for the best telescope deals this holiday season? We've got you covered! While Black Friday and Cyber Monday have ...

Find the best telescopes to unlock the wonders of the night sky — just in time for those long winter nights. The best telescope unlocks the wonders of the universe right from your backyard and ...

These miniature telescopes are useful for all sorts of people, from wildlife photographers to sports followers and birdwatchers. Monoculars provide magnification for a single eye, as opposed to a pair ...