Galileo discovered all three
Jupiter. It's one of the Galilean satellites, discovered in 1609.
No Ganymede is not a volcano. It is a moon of Jupiter. Io is the volcanic moon of Jupiter.
No. The Galilean moons are the four largest moons of Jupiter (Io, Europa, Ganymede, and Callisto) discovered by Galileo. Titan is the largest moon of Saturn, discovered by Christiaan Huygens.
He discovered Jupiter's four largest moons: Ganymede, Calisto, Io, and Europa.
IO is the fifth moon of Jupiter in terms of distance from Jupitert and the primary of the Galilean moons.
Galileo
Jupiter has 62 moons. The farthest moon is Io. it was discovered in 1610 and travels in the opposite direction of Jupiter.
Io - a moon of Jupiter
Many astronomers have discovered Jupiter's moons. Galileo discovered the first four moons of Jupiter, named Calisto, Europa, Ganymede and Io.
Jupiter. It's one of the Galilean satellites, discovered in 1609.
Io is a moon of Jupiter.
Jupiter has the Moon called Io - the most volcanically active object in our solar system.
Io was known long before the time of NASA. It was discovered by Galileo Galilei in 1610.
The moon Io is located by Jupiter.
Planet - The EarthMoon - Io a Moon of Jupiter.
Io is a moon that orbits Jupiter. Io has a major influence on Jupiter's magnetic field.
Io is a moon of Jupiter.