The Astral Plane is the mental dimension of Spirit.
It is the dimension of Consciousness as mental thought.
It has a duality of thought & thinking; physical consciousness & spiritual awareness.
It is the plane on which all knowledge is accessible as an individual consciousness or as an intuitive awareness.
It is the medium through which minds are read and information is channelled.
It is the place to which prayers are sent and from whence requests are answered.
It is the mythical home of the Principalities or Darkness and the Angels of Light.
Travelling in the astral plane is by the Astral Projection of the mind.
It is where the sub-conscious & super-conscious mind are either in opposition or in alignment, with the individual conscious mind.