Science writer David Whitehouse writes in Renaissance Genius: Galileo Galilei & His Legacy to Modern Science that Galileo “grew up in a household full of music and, ... His revolutionary works ...

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

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.

Inset: Galileo's sketch of the triple body he saw through his early telescope. Credit: Galileo Galilei Saturn is one of the five classical planets visible to the unaided eye.

Moon drawings from Siderius Nuncivs by Galileo Galilei, 1610. At the time the moon was believed to be perfectly smooth, like the Sun. Galileo differentiated great and ancient spots (macula magna ...

Believed to have been written in 1609 and 1610 by astronomer and physicist Galileo Galilei, it features a letter signed by the scientist describing a new telescope and sketches of moons orbiting ...