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They are respectively the fourth-, sixth-, first-, and third-largest natural satellites in the Solar System, containing approximately 99.997% of the total mass in orbit around Jupiter, while Jupiter is almost 5,000 times more massive than the Galilean moons.
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. German astronomer Simon Marius observed them around the same time, but is largely forgotten because he published his findings after Galileo ...
Jupiter is the largest planet in the solar system and has, as of 2023, 95 known moons. 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.
- The Editors of Encyclopaedia Britannica
Die Voyager-Raumsonden der 1980er-Jahre entdeckten über 40 weitere Satelliten; seit 2023 sind 95 Monde bekannt. [4] [5] Die vier größten sogenannten Galileischen Monde Ganymed, Kallisto, Io und Europa haben Durchmesser zwischen 5262 und 3122 km und wurden bereits 1610 entdeckt.
21. Aug. 2023 · Most of Jupiter's swarms of smaller moons orbit much farther out than the Galilean satellites. Of these distant moons, the larger ones may be captured asteroids. The smaller ones are likely fragments from massive collisions. Quick Facts. Galileo Galilei spotted the first Jupiter moons in 1610 with a new invention called a telescope.
This "family portrait" composite of the Jovian system includes the edge of Jupiter with its Great Red Spot, and Jupiter's four largest moons, known as the Galilean satellites. From top to bottom, the moons shown are Io, Europa, Ganymede, and Callisto.
8. Juni 2023 · Most of Jupiter's moons are small, with about 60 of the satellites measuring less than 6.2 miles (10 kilometers) in diameter. Unusually, the outer moons orbit in the opposite direction to...
