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The Fifth Largest Satellite in the Solar System

The Moon, is the only Earth's proper natural satellite. It also has a quarter of the diameter of the Earth, making it the largest natural satellite in the Solar System, relatively to the size of the Planet . It is the fifth largest satellite in the Solar System.


The Moon is estimated to have been formed 4.51 billion years ago, or even 100 million years earlier. A new solar system,research revealed.

Several formation mechanisms, have been proposed including the fission of the Moon from the Earth's crust, through centrifugal force, the gravitational capture of a pre-formed Moon, and the co-formation of Earth and the Moon together, in the primordial accretion disk.

The Moon orbits around the Earth. It has a synodic period of 27.3 days and a synodic period, of 29.5 days. The synodic period drives its lunar phases, which form the basis for the months of a lunar calendar.

The Moon is tidally locked to Earth. This means that the length of a full rotation of the Moon on its own axis is the same as the synodic period, resulting in its same side 'the near side' always facing Earth. 

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