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

Galileo’s telescope anchors the exhibit “Galileo, the Medici and the Age of Astronomy,” which is at the Franklin Institute in Philadelphia until September 7, 2009.

The sighting of Jupiter's moons by Galileo Galilei resonates through science and history. Using a handmade telescope in January 1610, Galileo confirmed the Copernican theory that the planets moved ...

Galileo Galilei, though famous for his scientific achievements in astronomy, mathematics, and physics, and infamous for his controversy with the church was, in fact, a devout Christian who saw not ...

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 ...

The one-page document known as the “Galileo manuscript” can’t be traced to any earlier than 1930 and was likely written by the notorious Italian forger Tobia Nicotra, it said in a statement.

Jeremy Kushnier (Bishop Maffeo Barberini) and Raúl Esparza (Galileo Galilei) in the world premiere of ‘Galileo: A Rock Musical’ at Berkeley Repertory Theatre. (Kevin Berne) Galileo Galilei (Raúl ...

To the Editor: Galileo Galilei, who first incurred the Roman Catholic Church's wrath on March 5, 1616, when he was ordered neither to "hold nor defend" the Copernican theory, did not prove the ...

Jupiter is the largest planet in our solar system with 80 moons. Galileo was the first to discover the moons of Jupiter on this day in history, Jan. 7, 1610.

Galileo Galilei is going from heretic to hero. The Vatican is recasting the most famous victim of its Inquisition as a man of faith, just in time for the 400th anniversary of Galileo's telescope ...