Astral Travel also known as Astral projection is an out-of-body experience. The subtle body moves away from the physical body, however the connection is maintained.
All human beings travel astrally. While sleeping astral travel happens for sure. But as the awareness grows, this same astral travel can be done consciously. This is a very big step on the path of evolution. Astral awareness has many benefits.
What is this Vidya? How to do astral travel? Wisdom, insights into astral travel and how to actually experience it, is all explained by Dr. Guruji Premji Nirmal in this program.