A simplified illustration of the parallax of an object against a distant background due to a perspective shift. When viewed from Viewpoint A, the object appears to be in front of the blue square. When the viewpoint is changed to Viewpoint B, the object appears to have moved in front of the red square.
From top to bottom: Io, Europa, Ganymede, Callisto. The Galilean moons are the four largest moons of JupiterâIo, Europa, Ganymede, and Callisto. They were discovered by Galileo Galilei around January 1610 and were the first group of objects found to orbit another planet. Their names derive from the lovers of Zeus.
Galilean Moons â are the four moons of Jupiter discovered by Galileo Galilee in 1610. Io â With a diameter of 3,642 km it is the 4th largest natural satellite in the solar system. It was named after a priestess who became one of Zeusâ human lovers.