I already had a personal experience. Either I Have a pretty good imagination or a really good ability to make connections when I sleep all I remember when I Woke up from the out of body experience was the answer you seek is information. during the experience I questioned why I am Not freezing and falling short of breath. I thought the bright light in the distance was the sun also sort of wondered how to get back as you cannot swim in a vacuum.As a man of science, you might enjoy reading a book authored by another man of science, Dr. Eben Alexander M.D..
A personal account of a well-respected neurosurgeon who suffered a rare illness which resulted in a near-death experience. In essence, "a scientist's case for the afterlife". And the inevitable struggle with his professional peers.
A book titled "Proof Of Heaven".