I have listened about astral travel I have seen many videos on YouTube about astral travel and tried but I can't do astral travel but at a night I am meditating and after 20 minute I felling something strange and my body start vibrating and then I feel that I am going out of my physical body and I am watching my physical body as a dead body everything looks bluish and I travel many parts of universe I am hearing sound of other astral body It was great experience for me