Astral body
Astral body is a subtle posited by many philosophers, intermediate between the soul and the body, composed of a subtle material and is able to feel and experience. In many recensions the concept ultimately derives from the philosophy of Plato though the same or similar ideas have existed all over the world well before Plato's time. The idea is rooted in common worldwide religious accounts of the afterlife in which the soul’s journey is described in such terms as an ecstatic out-of experience, wherein the spiritual traveller leaves the physical body and travels in his/her astral body. The astral body is sometimes said to be visible as an aura of swirling colours and many scientists and researchers devoted their careers and lives to study this phenomenon. The astral body is more subtle than the physical body and it contains prana (life force), the senses and the mind, according to yogic philosophy.
During sleep, death, or through drugs or any other loss of consciousness, the astral body is said to separate from the physical body. The astral body is associated with notions about an afterlife as it is the posited vehicle for carrying the soul from the physical body into higher realms.
Awareness of the astral body is believed to be stimulated by meditation. People who succeed in it are usually advanced yogi practicing meditation but if you have strong will and patience everything is possible.