Shortly after he began producing his binoculars, news of the telescope reached Galileo. These days, the telescope is mostly closely associated with the night sky, but it's also useful on land and ...

Well, any of us who has ever looked through a telescope could say the same, for the two principal types in use today were developed by giants: the refractor by Galileo and the reflector by Newton.

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 ...

PhotoPhoto of the Sun in hydrogen-alpha light. The giant planet Jupiter, whose large moons Galileo discovered with his "trouble-making" telescope, is more than 5 times farther from the Sun than ...

Second, you soon want a bigger telescope. Galileo, who first trained a telescope on the night sky 400 years ago this fall, pioneered this two-step program. First, he marveled at what he could see.

On Dec. 8, 1990, NASA's Galileo spacecraft flew by Earth on its way to Jupiter. Galileo was the first spacecraft to study Jupiter and its moons for an extended period of time, and it actually flew ...

An affirmation of those teachings, thanks to Galileo’s enhancement of the telescope, has proved unsatisfactory to the dominant biblical divinity of Catholic doctrine, which citizens believe to be ...

Once described as the most important telescope in history after the original built by Galileo, the Hubble Space Telescope has offered humanity an unrivalled window into the stars around us.

Galileo Galilei made an important discovery about Venus much later. He observed the planet not only waxing and waning through a telescope, but also appearing to change size. This showed him the ...