In the summer of 1612, Galileo Galilei turned his telescope to our closest star, the Sun, projecting its image safely onto a screen. To his surprise, he found its surface was blotted by small dark ...

The five watercolours are in Galileo's copy of Sidereus Nuncius (The Starry Messenger) in which he gives details of his revolutionary "celestial discoveries". The work was crucial in overturning the ...

For those with a passion for rare books, delving into an original work of Galileo has always offered unparalleled insight. There is no more immediate way to bring his inquisitive spirit to life than ...

Along with countering the geocentric system, Galileo demonstrated that our Moon was not a perfect sphere, as this had also been a long-standing belief. He was the first to deduce the Moon had craters, ...