FTP, identify this Galilean satellite located between Europa and Callisto, slightly larger than the planet Mercury, the largest moon in the solar system which is named for an Olympic cupbearer.
The largest feature on the surface of this celestial body is a vast, dark, circular island of ancient ice called Galileo Regio, which measures 4000 kilometers in diameter and covers one-third of the hemisphere that faces away from Jupiter. FTP, identify this Galilean satellite located between Europa and Callisto, slightly larger than the planet Mercury, the largest moon in the solar system which is named for an Olympic cupbearer.
The largest feature on the surface of this celestial body is a vast, dark, circular island of ancient ice called Galileo Regio, which measures 4000 kilometers in diameter and covers one-third of the hemisphere that faces away from Jupiter.
{Ganymede}