Galileo Galilei, with a homemade telescope, noticed three points of light near Jupiter. Initially believing they were distant stars, Galileo’s repeated observations over several nights and realized ...

Galileo Galilei was the founder of modern physics. To assess such a claim requires that we make a giant leap of the imagination to transport us to a state of ignorance about even the most ...

"Star Gazing" explores the life and contributions of Galileo Galilei, highlighting his groundbreaking discoveries in astronomy and the challenges he faced from the scientific community and the church.

Nature of the nebulae In 1610, astronomer Galileo Galilei used the newly invented telescope to show that the Milky Way was composed of a huge number of faint stars. For the next 300 years ...

By the 17th century, famed engineer and astronomer Galileo Galilei refined Copernicus' heliocentric model using observations made with telescopes he built himself.