Some people believe in an astral plane. which to Imy understanding is a plane where your mind can travel and is not grouned by universal laws. Which you are then astral projecting. I myself don't know anything from expieriance other than the fact that you should rule nothing out. I have learned anything is possiple. I have had so many LD expieriances that I thought were far fetched only to find myself expiriance it on my own.