The journey of astronomical telescopes began in the early 17th century when Galileo Galilei crafted his first refracting ...

The first spectacles, designed to correct farsightedness ... "objective" lens—the convex lens at the far end of the telescope—Galileo ground a lens larger than he needed, for example.

Some of humanity's modern telescopes look nothing like their predecessors, but they share a common purpose and history. Here's how mankind learned to see the stars. Read more: 14 Best Fighter ...

Galileo mentions that “On the 7th day of January in the present year, 1610, in the first hour of the following night, when I was viewing the constellations of the heavons through a telescope ...

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.

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 ...

Galileo said it best: telescopes “reveal the invisible ... Prepare to be dazzled! My first word of advice is to BE PATIENT. Too many Christmas telescopes wind up neglected because of bad ...

The first telescopes had been built in Flanders and quickly became indispensable tools for ... It was during this time that he crossed paths with Galileo Galilei with whom he discussed astronomical ...

Galileo made himself one of the world's first telescopes and discovered the moons of Jupiter. He supported Copernicus' theory that the Earth revolved around the Sun. This brought him in conflict ...