I am a Trojan boy of great beauty whom Zeus carried away to be cupbearer to the gods what moon are you?

Answer 1

You are speaking of the moon Ganymede, named after the famed Trojan prince who had been abducted by Zeus in early Greek mythology.

Ganymede is a moon of Jupiter, having been discovered by the renowned Italian astronomer Galileo Galilei. It is the largest known moon in our solar system. So large, in fact, that if Ganymede orbited the sun instead of Jupiter, it could be classified as a planet.

The only moon in the solar system to have been named after a male figure, it reaches in diameters larger than the planet Mercury, and it is the only known moon to have its own "magnetosphere", or magnetic field. This could be a sign of an iron core.

Furthermore, Ganymede is also rumored to harbour oceans like its sister moon Europa, but experts speculate they are hidden beneath two thick layers of ice and remain liquid only due to intense pressure.