Orrery on display in Kassel at the Astronomisch-Physikalisches Kabinett and in Dresden at the Mathematisch-Physikalischer Salon. In "De revolutionibus orbium coelestium", published in Nuremberg in 1543, Nicolaus Copernicus challenged the Western teaching of a geocentric universe in which the Sun revolved daily around the Earth. He observed that some Greek philosophers had proposed a heliocentric universe. This simplified the apparent epicyclic motions of the planets, making it feasible to represent the planets' paths as simple circles. This could be modelled by the use of gears. Tycho Brahe's improved instruments made precise observations of the skies (1576–1601), and from these Johannes Kepler
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