Making the far near The invention that set the stage for the ... "objective" lens—the convex lens at the far end of the telescope—Galileo ground a lens larger than he needed, for example.

Galileo Galilei's telescopic discovery of Jupiter's four moons in 1610 revolutionized astronomy and supported heliocentric ...

Instead, they offered him payment in exchange for developing a binocular form of his invention. Shortly after he began producing his binoculars, news of the telescope reached Galileo. These days ...

3 min read The Hubble Space Telescope was designed to free astronomers of a limitation that has plagued them since the days of Galileo—Earth's atmosphere. Shifting air pockets in the atmosphere ...

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

Galileo was part of the Renaissance, the centuries-long ferment accelerated and intensified by the invention of printing ... And he succeeded in making a telescope of the sort familiar to everyone ...