astral projection

http://www.crystalinks.com/astralprojection.html

The Rosicrucian Fellowship has released several publications on the "etheric region" and the etheric body, as well as their integral relationship with the physical state of being (see Max Heindel, et al). The Theosophical Society, having several branches around the world, also has published literature on both the etheric and astral states. To them, the etheric body is actually the same as the physical; however, it "rests" at a slightly different frequency than regular matter.