Immanuel Velikovsky 10 June [O.S. 29 May] 1895 – 17 November 1979) was a Russian-Jewish independent scholar best known as the author of a number of controversial books reinterpreting the events of ancient history, in particular the US bestseller Worlds in Collision published in 1950. Earlier, he played a role in the founding of the Hebrew University of Jerusalem in Israel, and was a psychiatrist and psychoanalyst.