"Proof of Heaven" is a book written by Dr. Eben Alexander, a neurosurgeon who experienced a near-death experience (NDE) while in a coma due to a severe brain infection. In the book, he describes his journey into an otherworldly realm, where he encountered profound love and a sense of connection to the universe. His experience challenges conventional scientific views on consciousness and the afterlife. The book has sparked discussions about the nature of consciousness and the possibility of life after death. It combines elements of spirituality, science, and personal narrative, appealing to both skeptics and believers. Dr. Alexander's story has inspired many to explore their own beliefs about existence and the afterlife.