A gradual change in the position of a star or other object on the celestial sphere that is the result of the object's intrinsic motion through space rather than mere apparent motion as observed from Earth.
Sicily is Italy's largest island and the largest island in the Mediterranean Sea. It's also a geographical and political region of Italy, famed for its beautiful beaches, cuisine, and fascinating history.icily is Italy's largest island and the largest island in the Mediterranean Sea. It's also a geographical and political region of Italy, famed for its beautiful beaches, cuisine, and fascinating history.
Catania is located on the east coast of the main island of Sicily, at the foot of the Mount Etna. As observed by Strabo the location of Catania at the foot of Mount Etna was both a source of benefits and of evils.On the one hand, the violent outbursts of the volcano from time to time desolated great parts of the city's territory.s observed by Strabo the location of Catania at the foot of Mount Etna was both a source of benefits and of evils. On the one hand, the violent outbursts of the volcano from time to time desolated great parts of the city's territory.