Astral plane Archangel Plane Subtle body Esoteric cosmology Astral projection Neoplatonism Esotericism Greco-Roman mysteries Afterlife Angel - esotericism The astral plane, also called the astral world, is a plane of existence postulated by classical, medieval, oriental and esoteric philosophies and mystery religions. It is the world of the planetary spheres, crossed by the soul in its astral body on the way to being born and after death, and generally said to be populated by angels, spirits or ot... more »her immaterial beings. In the late 19th and early 20th century the term was popularised by Theosophy and neo-Rosicrucianism.« less