Italian astronomer Galileo Galilei made a number of inventions and discoveries that remain important to astronomy and science in general today.

Galileo is considered one of the greatest astronomers of all time. His discovery of Jupiter’s major moons (Io, Europa, Ganymede and Callisto) revolutionized astronomy and helped speed the ...

A look at Galileo Galilei's most notable innovations, discoveries and observations in the field of astronomy, physics and other disciplines on the noted Italian physicist, mathematician, engineer ...

Astrolabe In the year 1632, Galileo came up with a super cool gadget – a portable astronomical calculator. Now, this wasn't your everyday calculator; it had a special job. What it could do was ...

Now thanks to the Franklin’s new exhibit, “Galileo: The Medici and the Age of Astronomy,” Philadelphia has a chance to experience the art […] Skip to content All Sections ...

Galileo may not have been as revolutionary to astronomy as we commonly think. But for physics, he's the largest giant whose shoulders Newton stood upon.

JUNE 22, 1633 was the date on which the astronomer Galileo Galilei was forced by the Inquisition to recant his view that the Earth orbited the Sun rather than the other way round.