Galileo invented the geometric and military compass, his first commercial scientific instrument, in 1597. The device, which resembled two rulers that moved over a third, curved piece, acted as an ...

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 ...

Galileo Galilei was the founder of modern physics. To assess such a claim requires that we make a giant leap of the imagination to transport us to a state of ignorance about even the most ...