The unremarkable-looking object is in fact one of the most important artifacts in the history of science: it's one of only two surviving telescopes known to have been made by Galileo Galilei ...

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.

Galileo Galilei was the founder of modern physics ... the centuries-long ferment accelerated and intensified by the invention of printing in the middle of the 15th century. He was not alone.

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 ...

The amazing story of how we made the modern world, told through six fantastic inventions ... viewers will discover for the first time: Galileo Galilei, Leonardo da Vinci, female pioneers Ada ...