Geocentric model fire being lighter than air. Beyond the layer of fire, were the solid spheres of aether in which the celestial bodies were embedded. They, themselves, were also entirely composed of aether. Adherence to the geocentric model stemmed largely from several important observations. First of all, if the Earth did move, then one ought to be able to observe the shifting of the fixed stars due to stellar parallax. In short, if the Earth was moving, the shapes of the constellations should change considerably over the course of a year. If they did not appear to move, the stars are either
Pension term assurance effectively stopped any more new PTA business being written. Those with existing policies were allowed to keep them running. Despite what the name might suggest, Pension Term Assurance did not have to form part of a pension - it merely needed to be taken out at the same time as a new pension was set up. Pension term assurance Pension Term Assurance (PTA) was a form of life insurance available within the United Kingdom. Although PTA had been available for several years, it only became mainstream when changes were made to pension legislation on "A Day", 6 April 2006. Following