But, creative as they may have been, none of these experiments satisfied me. I had been drawn in by the poetic force of Ganymede’s situation, the romanticism of a few striking images—as a result, I ...

Ganymede is about 4.5 billion years old, ... Zeus, a counterpart of Jupiter in Roman mythology, carried Ganymede, who had taken the form of an eagle, to Olympus, ...

While Ganymede hasn’t yet been observed spewing plumes of water vapor like Saturn’s moon Enceladus, Jupiter’s largest moon is most likely hiding an enormous saltwater ocean.

Discovered by Galileo in 1610 while he was messing about with his new telescope, Ganymede is not only the largest moon of the planet Jupiter, but the largest in the solar system. In fact, it's ...