Leave Your Body. The Complete Manual for Astral Projection Techniques, Entity Classification, Defense, Navigation, and a 90-Day Development Protocol (en Inglés) - Valentina Nightingale

Most books about astral projection will tell you the experience is beautiful, your guides are waiting, and nothing can really hurt you.

This is not that book.

Written by a practitioner who takes both the science and the tradition seriously, this is one of the first guides to astral projection that engages with what modern physics has discovered about the nature of reality and what those discoveries mean for anyone exploring non-physical experience.
String theory requires eleven dimensions that cannot be detected at current instrument sensitivity. Dark matter and dark energy make up a large part of the universe and remain completely unexplained. The simulation hypothesis is now a formally argued philosophical position, not a science fiction premise. The occult practitioner's claim that most of reality is non-physical is no longer a radical one. It is the cosmological consensus.

But this book is not only about physics. What you will find here: