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

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.

Early telescopes were all refracting telescopes of the kind Galileo made. While they revolutionized the science of astronomy, they had some innate downsides. The act of refraction also causes ...

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

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

Galileo Galilei – often referred to just as Galileo ... And his discoveries with the telescope changed our understanding of the universe. It isn’t often that discoveries that revolutionise ...

The four largest – Io, Europa, Ganymede and Callisto – were discovered by Galileo Galilei in 1610 when he pointed the first astronomical telescope at the Moon, Venus and the planet Jupiter in quick ...

Galileo Galilei was born on February 15 ... Galileo soon developed the strongest telescope the world had ever seen, and would prove the Church wrong. Though he had many breakthroughs in physics ...