In the year 1610.
Because they were discovered first by Galileo.
The Galilean moons were discovered by Galileo Galilei in 1610.
They were discovered by Galileo.
Galileo discovered Jupiter's 4 largest moons, the Galilean moons. The largest moon's name is Ganymede.
The Galilean moons are the four largest moons of Jupiter, so called because they were discovered by Galileo Galilei.
Galileo Galilei in 1610
They are the largest of Jupiter's moons and were discovered by Galileo in 1610.
Because the astronomer galileo galilei discovered the four moons.
Only Jupiter, the Galilean moons are the four largest moons of Jupiter which Galileo discovered.The four satellites discovered by Galileo orbit Jupiter.
Jupiter is the planet that has four Galilean moons. These moons are Io, Europa, Ganymede, and Callisto, discovered by Galileo Galilei in 1610.
Galileo discovered them. Their names are: Io, Callista, Europa and Ganymede. He discovered them in January 1610. == ==Galileo Galilei in 1610.
The Galilean moons are Io, Europa, Ganymede, and Callisto, all of which orbit Jupiter. The term "Galilean" does not denote anything special about the moons other than that they were discovered by the astronomer Galileo Galilei.