From top to bottom, the moons are Io, Europa, Ganymede and Callisto. Europa is almost the same size as Earth's moon, while Ganymede, the largest moon in the Solar System, is larger than planet Mercury.Mar 15, 2017
The moons of Jupiter are (in order by their distance from Jupiter): Metis, Adrastea, Amalthea, Thebe, Io, Europa, Ganymede (the biggest), Callisto (the second biggest), Leda (the smallest), Himalia, Lysithea, Elara, Ananke, Carme, Pasiphae, Sinope, and many newly-discovered moons that haven't been named yet.
Astronomers have discovered 10 small moons orbiting Jupiter, bringing its total to 79 — by far the most moons known around any planet. … Together, the moons help to illuminate the Solar System's early history.
Members
| Name | Diameter (km) | Semi-major axis (km) |
|---|---|---|
| Io Jupiter I | 3660.0 × 3637.4 × 3630.6 | 421800 |
| Europa Jupiter II | 3121.6 | 671100 |
| Ganymede Jupiter III | 5268.2 | 1070400 |
| Callisto Jupiter IV | 4820.6 | 1882700 |
Going from closest moon to Jupiter to the outermost, their order is Io, Europa, Ganymede and Callisto. Fernando Roquel Torres in Caguas, Puerto Rico, captured Jupiter, its Great Red Spot and all 4 of its largest moons – the Galilean satellites – at Jupiter's 2017 opposition.
These large moons, named Io, Europa, Ganymede, and Callisto, are each distinctive worlds.
ESA Science & Technology – Jupiter's largest moons From top to bottom, the moons are Io, Europa, Ganymede and Callisto. Europa is almost the same size as Earth's moon, while Ganymede, the largest moon in the Solar System, is larger than planet Mercury.
There are 80 known moons of Jupiter, not counting a number of moonlets likely shed from the inner moons. … The Galilean moons are by far the largest and most massive objects to orbit Jupiter, with the remaining 76 known moons and the rings together composing just 0.003% of the total orbiting mass.
Jupiter has 53 named moons and another 26 awaiting official names. Combined, scientists now think Jupiter has 79 moons.