It has been known since prehistoric times. Galileo's discovery, in 1610, of Jupiter's four large moons Io, Europa, Ganymede and Callisto (now known as the Galilean moons) was the first discovery of a celestial motion not apparently centered on the Earth.
It has been known since prehistoric times. Galileo Galilei's discovery, in 1610, of Jupiter's four large moons Io, Europa, Ganymede and Callisto (now known as the Galilean moons) was the first discovery of a celestial motion not apparently centered on the Earth.
Changed: 24c24
less hydrogen and helium. Jupiter has a faint ring system composed of dust particles.
less hydrogen and helium. Jupiter has a faint planetary ring system composed of dust particles.
Changed: 27c27
The Galileo probe went into orbit around Jupiter in 1998(?), dropping a smaller subprobe into Jupiter's atmosphere and conducting multiple flybys of all of the Galilean moons.
The [Galileo probe]? went into orbit around Jupiter in 1998(?), dropping a smaller subprobe into Jupiter's atmosphere and conducting multiple flybys of all of the Galilean moons.
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