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

But it won't be a star that will be keeping the moon company on this early winter's evening, but the largest planet in the ...

Dexter defines The Galilean Suite as tone poems, but while Holst’s inspiration for The Planets was astrological, this work is influenced by what we know about the moons’ geology.

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

All together, they form a satellite system which is called the Jovian system. The most massive of the moons are the four Galilean moons: Io; Europa; Ganymede; and Callisto, which were independently ...

The final launch of an Ariane 5 ES rocket will loft another four Galileo satellites from the European Spaceport in Kourou, French Guiana on Wednesday – with the launch expected at 11:25 UTC.

You’re looking at its four Galilean Moons, by far the largest of the giant planet’s estimated 79 moons. Their collective name comes from the fact that Galileo first observed them in the year 1609.

And yet, this was the case with Galileo’s discovery of Jovian satellites, which took shape from January 7, 1610. Astronomical changes were brewing at the end of 1609. With the telescope having ...

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 ...