Explore Galileo Galilei's life, discoveries, controversies and legacy in astronomy. A journey through Renaissance intellect and scientific revolution.

The first publication by Galileo Galilei has set a new auction record for the celebrated astronomer, selling for $1.5 million at Christie's.

Galileo continued writing in conversational language for his landmark 1632 work, Dialogo sopra i due massimi sistemi del ...

He was born in Tuscany, Italy in 1564, when parents frequently provided their sons with personal names inspired by their traditional family identifiers. In fact, Galileo’s forebearers actually used ...

Galileo Galilei was peering through a new telescope in 1610 when he noticed something strange: several bright objects flickering around the planet Jupiter that seemed to change positions nightly.