NASA's mission to send a spacecraft to scour Jupiter's moon Europa for signs of life appears back on track after Hurricane ...

Voyager 1 took this photo of Jupiter and two of its satellites (Io, left, and Europa) on Feb. 13, 1979. Io is about 220,000 miles above Jupiter's Great Red Spot; Europa is about 375,000 miles ...

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 ...

These pinpricks of light are actually Jupiter's four largest moons, now known as the Galilean moons: Io, Europa, Ganymede ... In 1979, NASA's Voyager 1 and 2 spacecraft zipped by the gas giant ...

the “Pale Blue Dot” of Earth as seen by Voyager 1 in 1990; Jupiter, Io and Europa seen by Voyager 1 in 1979; Voyager 2 in a clean room of the Jet Propulsion Laboratory in Pasadena, Calif., ...

Ice moons such as Jupiter’s Europa and Saturn’s Enceladus are currently at the forefront of the search for extraterrestrial life, as it is believed that beneath their thick icy shells there ...

Several missions have built on Voyager’s discoveries (one set out two months ago for Jupiter’s icy moon Europa), but Voyager is alone in passing near Uranus and Neptune. The findings go beyond ...

NASA’s Europa Clipper craft was launched aboard a SpaceX rocket, aiming to conduct its first mission to study Jupiter’s icy ocean moon Europa. Photo: John Raoux/AP ...

There are currently 92 moons known to orbit Jupiter. The four largest – Io, Europa, Ganymede and Callisto – were discovered by Galileo Galilei in 1610 when he pointed the first astronomical telescope ...

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