Worls in Collision is a book written by Immanuel Velikovsky and first published on April 3, 1950, by Macmillan Publishers. The book, Velikovsky's most criticized and controversial, was an instant New York Times bestseller, topping the charts for eleven weeks while being in the top ten for twenty-seven straight weeks. Despite this popularity, overwhelming rejection of its thesis by the scientific community led Macmillan to stop publishing it and to transfer the book to Doubleday within two months (Friedlander 1995:14).