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Ganymede, or Jupiter III, is the largest and most massive natural satellite of Jupiter, and in the Solar System. Despite being the only moon in the Solar System with a substantial magnetic field, it is the largest Solar System object without a substantial atmosphere.
The four largest moons of Jupiter—Io, Callisto, Ganymede, and Europa—were the first objects in the solar system discovered with a telescope. Galileo discovered them in 1610, and they are now called the Galilean satellites.
The Galilean moons are by far the largest and most massive objects to orbit Jupiter, with the remaining 91 known moons and the rings together comprising just 0.003% of the total orbiting mass.
14 Οκτ 2024 · Ganymede, largest of Jupiter’s satellites and of all the satellites in the solar system. One of the Galilean moons, it was discovered by the Italian astronomer Galileo in 1610. It was probably also discovered independently that same year by the German astronomer Simon Marius, who named it after.
The Galilean moons (/ ˌ ɡ æ l ɪ ˈ l eɪ. ə n /), [1] or Galilean satellites, are the four largest moons of Jupiter: Io, Europa, Ganymede, and Callisto.
Jupiter's four largest moons were the first moons discovered beyond Earth. They are called the Galilean satellites after Italian astronomer Galileo Galilei, who is credited with their discovery in 1610.
8 Μαΐ 1998 · This composite includes the four largest moons of Jupiter which are known as the Galilean satellites. Shown from left to right are Io, closest to Jupiter, followed by Europa, Ganymede, and Callisto.
