Galileo Galilei's telescopic discovery of Jupiter's four moons in 1610 revolutionized astronomy and supported heliocentric ...

Italian astronomer Galileo Galilei peered through his newly improved 20-power homemade telescope at the planet Jupiter. He ...

But it was not always so. Until the likes of Copernicus, Kepler and Galileo came along, everyone thought the planets (that they knew about) revolved around Earth, and before even that, no one was ...

The Galileo probe expanded on our knowledge of Jupiter's moon, Io, showing us just how hot and hellish the Jovian satellite ...

On January 7, 1610, the Italian astronomer Galileo discovered three of Jupiter's moons: Callisto, Europa and Io. When he ...

To Galileo, the moons proved that not everything in space circled the Earth, and therefore our planet was not the absolute center of the universe, as the Church maintained the Bible had it.

An event called a "ring plane crossing" will occur between Saturn and Earth on March 23, 2025, when Saturn's rings will ...

This belief endured well into the Scientific Revolution, with both Copernicus and Galileo arguing that the then-known planets (Mercury, Venus, the Earth and the moon, Mars, Jupiter, and Saturn ...

NASA’s Hubble Space Telescope captured a cameo appearance of the tiny moon Phobos on its trek around the Red Planet. Even today, it is frequently called the "Red Planet" because iron minerals in the ...