Inquiring on the sky (., the Universe) has been present as affair of concern of the human kind since the early days of the first hominids like homo floresiensis and late homo sapiens. Fascination of sky watchers on a starry night, with its planets and the Moon, still today invites the best human minds to struggle for unveiling its secrets. To extending farther out the reach of our eyes, the telescope was introduced to astronomy in 1609 by Galileo Galilei. Since then, technological advances in many branches of physics and astronomy have driven the mankind to more and more astonishing discoveries in the Universe
