Europa is 1 of Jupiter's 63 moons, one of the four Galilean moons, and it is important because it could posssibly hold life.
Io, Europa, Ganymede, and Callisto.
Mercury has no satellites.
Jupiter has four large moons known as the Galilean moons. These moons are Io, Europa, Ganymede, and Callisto. They are considered important because of their size, unique features, and potential for scientific study.
Jupiter's count of moons is currently at 63. The four most important moons are Ganymede, Europa, Callisto, and Io.
Four Moons of Darkover was created in 1988.
Four Moons of Darkover has 284 pages.
No satellites have been discovered yet in orbit around Mercury. As of now, the answer to the question is zero.
The biggest four were discovered by Galileo. They are : Callisto Europa Ganymede Io
Jupiter has about 63 moons, but the four main moons of Jupiter are Europa, Ganymede, Callisto, and Io.
My answer is four moons that Galileo found on or near Jupiter.
Galilean