Those with a rudimentary understanding of history might claim that it was Galileo Galilei who invented ... and it's thought that his telescope was the first one to observe the heavens.

The first telescopes, known as refracting telescopes ... Italian astronomer Galileo Galilei was among the first to point such spyglasses at the sky. Johannes Kepler, a German astronomer, improved ...

Still, even Galileo recognized the ground-based uses of telescopes. After building his first telescopes, Galileo demonstrated the new instrument to the Venetian Senate, including military leaders.

When Italian astronomer Galileo Galilei heard rumors of the first practical telescope at the beginning of the 17th century, he was quick to craft his own version and turn it toward the heavens.

When Galileo Galilei pointed his first telescope to the heavens in 1610, he discovered “congeries of innumerable stars” hidden in the band of light called the Milky Way. Our cosmos grew ...

Galileo Galilei (1564–1642 ... This specialized knowledge paid off when Galileo first aimed his telescope at the Moon, although he initially struggled to interpret what he saw.

On July 30, 1610, the famous astronomer Galileo Galilei became the first to observe rings around the planet Saturn. Shortly after the telescope was invented in 1608, Galileo peered out into the ...