De revolutionibus orbium coelestium divided into six "books" (sections or parts), following closely the layout of Ptolemy's "Almagest" which it updated and replaced: Copernicus argued that the universe comprised eight spheres. The outermost consisted of motionless, fixed stars, with the Sun motionless at the center. The known planets revolved about the Sun, each in its own sphere, in the order: Mercury, Venus, Earth, Mars, Jupiter, Saturn. The Moon, however, revolved in its sphere around the Earth. What appeared to be the daily revolution of the Sun and fixed stars around the Earth was actually the Earth's daily rotation on its own axis. Copernicus adhered
Admiralty in the 16th century with salvage claims for wrecks, acting as a judge in relation to maritime issues. The Vice Admiralty Court was a prerogative court established in the early 16th. A vice-admiralty court is in effect an admiralty court. The word “vice” in the name of the court denoted that the court represented the Lord Admiral of the United Kingdom. In English legal theory, the Lord Admiral, as vice-regal of the monarch, was the only person who had authority over matters relating to the sea. the holder of the post Vice-Admiral of the Coast was responsible for the defence of one of the