A portrait of Galileo Galilei, by Justus Sustermans (1597-1681), painted in 1636. On display at the Galleria Degli Uffizi in Florence, Italy. (Image credit: DEA PICTURE LIBRARY via Getty Images) ...

On July 30, 1610, the famous astronomer Galileo Galilei became the first to observe rings around the planet Saturn. Shortly ...

July 25 has been a date marked by remarkable events that have shaped history.One of the most profound events occurred on July ...

Galileo, which orbited Jupiter between 1995 and 2003, flew close to Europa several times, offering humanity its first detailed glimpses of the moon's surface and its secrets.

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.

On Jan. 7, 1610, Galileo discovered four moons revolving around Jupiter — a discovery that would change his life forever. These four moons are Jupiter’s largest satellites — lo, Europa ...

Now that investigation has led to another discovery. An Italian historian has concluded that Galileo authored a 17th century treatise on astronomy under a pseudonym.

Galileo Galilei, Italian mathematician, astronomer and physicist, before the Inquisition. Galileo was put under house arrest, and went blind in 1637. (Bettmann/Getty Images) ...

A historian working on a book about the Italian astronomer made the discovery. A manuscript once attributed to Galileo Galilei, now believed tp be a 20th-century forgery.

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 ...