Jupiter's satellites discovered by Galileo Galilei Called - Galilean satellites, these are four celestial bodies that are lunar-sized bodies, they are easily visible with a small telescope and they would certainly be visible even to the naked eye, if not for their proximity to bright Jupiter. If we exclude the satellite of our earth, the Moon, then they were the first discovered satellites of the planets. Simon Marius, who said he discovered them at the same time as Galileo, named them Io, Europa, Ganymede, and Callisto, after Jupiter's favorites. They are also known as moons I, II, III, and IV, in order of increasing distance from the planet. Almost three centuries passed before the next satellite of Jupiter - satellite V, or Amalthea, was visually discovered by Barnard in 1892. found him neither on earth nor in heaven, which saved him from being eaten by his own father. The cornucopia is the Horn of Amalthea. That's why the goat Amalthea turned out to be the closest to Jupiter. Eight outer moons have been found photographically, with the most recent being discovered Leda (satellite XIII) by Charles Koval in 1974 using the 122-cm Schmidt telescope at the Palomar Observatory in Pasadena.
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