It was believed that the celestial region was made of a fundamentally different kind of matter , who thought it was made of Aether ?
However , the difference from the electromagnetic aether of Maxwell and Lorentz lies in the fact , that "" because it was no longer possible to speak , in any absolute sense , of simultaneous states at different locations in the aether , the aether became , as it were , four dimensional , since there was no objective way of ordering its states by time alone . "" .