In 2021, the 50th anniversary of the first publication of Breakthrough, "What happens after physical death?" is still the big question concerning the nature of existence.
In his groundbreaking work, psychologist Konstantin Raudive experimented using a communication method known as Electronic Voice Phenomena (EVP), whereby deceased communicators appear to send messages and images via computers, radios, televisions and other electronic devices.
In 1959 Swedish artist and filmmaker Friedrich Jurgenson was making a tape recording and during playback he discovered what sounded like a human voice on the tape. He put it down to faulty equipment but when he searched other tapes, he found more voices, which seemed to be messages from his dead mother. Jurgenson recounted the experience in a book titled Voices from Space. The book impressed Raudive and subsequently he and Jurgenson collaborated for a time and encountered more voices.
Later, Raudive undertook his own research amassing a collection of thousands of voice recordings and in 1968 his work was published in German under the title, Unh