Europa, one of Jupiter's Galilean moons, hosts a liquid ocean beneath a frozen shell. Because of its proximity to Jupiter, the moon is constantly hit with radiation that erodes its icy surface ...

Discovered by Galileo in 1610, Europa is one of the four so-called Galilean moons of Jupiter, along with Ganymede, Io and ...

This week, NASA released the first image from the Europa Clipper spacecraft's voyage. The image is a mosaic of a star field, created from three shots the solar-powered orbiter captured in December of ...

On Dec. 27, 2024, NASA's Juno spacecraft swooped by the volcanic world Io. It witnessed a giant eruption.

Watch a bright Moon dominate the sky, trace the Winter Hexagon, and continue enjoying the evening parade of planets in the ...

NASA officials said what Juno spotted was 'the most powerful volcanic event ever recorded on the most volcanic world in our ...

It's tugged in all directions during its orbit by the gravity of Jupiter and the three other Galilean moons (Europa, Ganymede and Callisto). The friction builds up heat inside Io and causes ...

Loki Patera is 202 kilometres (126 mi) in diameter, covers 20,000 sq km (7,700 sq mi), and was the largest volcanic feature found on Io until these new observations revealed the hot spot in the south ...

Dave Dexter, composer of The Galilean Suite, four tone poems about the largest moons of Jupiter—Io, ... [+] Ganymede, Callisto and Europa. It's fair to say that of all the moons, it’s Io—the ...

The most massive of the moons are the four Galilean moons: Io; Europa; Ganymede; and Callisto, which were independently discovered in 1610 by Galileo Galilei and Simon Marius and were the first ...

Jupiter has four large moons – Io, Europa, Ganymede and Callisto – with diameters ... The four larger moons mentioned above, also known as the 'Galilean moons', account for 99.997 percent of the total ...

The brutal conditions also make Io intriguing to NASA scientists intent on learning more about the innermost and third-largest of Jupiter’s four Galilean moons. For nine years, a spacecraft ...