Galileo wrote the 1613 letter to Benedetto Castelli, a mathematician at the University of Pisa in Italy. ... Most crucially, he reasoned that the heliocentric model of Earth orbiting the Sun, ...

Galileo, like no other scientist, personifies revolutionary historical change and the birth of modern science. Since Galileo’s time, science has not only made rapid progress, it has also become an ...

While Galileo didn't invent the telescope, he is the person most inextricably tied to its use and development. The field of optics had become so established, and the principles behind Lippershey's ...

These insightful quotes by Galileo were originally written in Latin and Italian, and they appeared in the scholar’s Sidereus Nuncius (1610), Il Saggiatore (1623) and Dialogue Concerning the Two Chief ...

The Galileo Test draws its name from Galileo's ability to generate revolutionary ideas, such as his heliocentric theory, which changed humanity's perception of the cosmos.

Galileo chafed under his ecclesiastical constraints. And indeed, except for the Scopes trial, no other single event so thoroughly cemented religion’s reputation as the enemy of science. Yet he ...