Labeled top to bottom, the tiny pinpricks of light above bright Jupiter are the four Galilean moons; Callisto, Europa, Ganymede, and Io. Callisto, Ganymede, and Io are physically larger than Earth’s Moon, while water world Europa is only slightly smaller. In fact, of the Solar System’s six largest planetary satellites, only Saturn’s moon Titan is missing from the scene.
~ Mosaic Floor from Villelaure with Diana and Callisto Surrounded by Hunt Scenes.
Place of origin: Villelaure, France
Date: A.D. 3rd century
Medium: Colored marble, limestone, and glass tesserae mosaic.
In an episode where Gabrielle gets married to a man and immediately sees that man get filleted, and in an episode where Xena – too familiar with gods to worship them – gets on her knees to pray for the preservation of Gabrielle’s innocence, these lines of Callisto’s feel especially significant.
I thought I’d start off a series of photos about the moons in our Solar System. This is a wonderful image of Callisto, a moon in the Jovian system and one of the 4 Galilean moons. It is the 3rd largest moon in the Solar system, with a diameter of 4821km. For comparison, the diameter of Mercury is 4878km. Its orbit around Jupiter is tidally locked, so its keeping the same face turned to Jupiter. Its appearance is very unique in our Solar System; There’s nothing quite like it, with the surface being extremely heavily cratered and very old. (｡◕‿◕｡)