An OBE Is (according to eastern religions) when you are confined to the lowest astral plane.
An OBE is (according to scientists) a replay of the stimuli experencied while awake during sleep.
Astral Projection is (according to scientists) a type of Lucid Dream and only a produt of your sleeping brain.
Astral Projection is ( according to eastern religions) when your spirit has access to the higher astral planes and can meet with spirits. eg. Angels, Demons, Spirit guides, Gods, Goddesses, and oher astral travlers like yourself.
Astral Projection, Lucid Dreaming, and OBE's are (according to me) somthing to stay away from.