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 dialect Galilean dialect The term Galilean dialect generally refers to the form of Jewish Palestinian Aramaic spoken by people in Galilee during the late Second Temple period, for example at the time of Jesus and the disciples, as distinct from a Judean dialect spoken in Jerusalem. The Aramaic of Jesus, as recorded in the Gospels, gives various examples of Aramaic phrases. The New Testament notes that the pronunciation of Peter gave him away as a Galilean to the servant girl at the brazier the night of Jesus' trial (see Matthew 26:73 and Mark 14:70). John Lightfoot and Johann Christian Schöttgen identified