even though their positions relative to each other changed. Using his celestial observations, including the discovery of Jupiter’s satellites, Galileo came up with a book titled Siderius Nuncius ...

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 satellite system is a £8bn navigation project intended to rival the US-controlled Global Positioning System. Once fully operational in 2020 it will provide accurate position ...

Saturn, Jupiter’s outer neighbour, currently has 83 known satellites. The four larger moons mentioned above, also known as the 'Galilean moons', account for 99.997 percent of the total mass of Jupiter ...

A few weeks ago, China launched the final satellite in its BeiDou-3 satellite positioning system. Didn’t know that China had its own GPS? How about Europe’s Galileo, Russia’s GLONASS, or ...

Click here to read Finch Walker’s full report SpaceX plans to launch the next two Galileo satellites into orbit for the European Space Agency (ESA). The space company is targeting Tuesday ...

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.

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.

The inspiration for these films come from the incredible images and sounds coming from the Galileo space probe. The four large moons of Jupiter were thought to be nothing more interesting than our ...

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 ...