Galilean moons century when other inner moons were discovered, and Marius' names became widely used. Galileo was able to develop a method of determining longitude based on the timing of the orbits of the Galilean moons. The times of the eclipses of the moons could be precisely calculated in advance, and compared with local observations on land or on ship to determine the local time and hence longitude. The main problem with the technique was that it was difficult to observe the Galilean moons through a telescope on a moving ship; a problem that Galileo tried to solve with the invention of
Galilean faith Galilean faith The Galilean faith (or "Galilaean faith") is a term used by some people of the ancient world (most notably emperor Julian) to designate Christianity. The town of Nazareth (the place of Jesus' childhood) is located in Galilee. Christ's followers were thus called "Galileans". Galilee was part of the province of Judea. The reason for this term was to marginalize Christianity and to indicate that it came from a small area, a religion of only local significance. In the same manner, Jesus was called "of Nazareth" or "the Nazarene" in this context (another emphasis on geographical origin and the