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

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

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 Galilei famously stood trial for his insistence—based on astronomical observations through his telescopes—that the Copernican model of the Solar System was correct. The Earth revolved ...

Galileo Galilei, “martyr of science” in the picturesque 19th-­century expression, has undoubtedly attracted more biographers than Copernicus, Kepler, Newton and Einstein combined.

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 ...