Vintage condition Gravity's Rainbow is a 1973 novel by the American writer Thomas Pynchon. The narrative is set primarily in Europe at the end of World War II and centers on the design, production and dispatch of V-2 rockets by the German military. In particular, it features the quest undertaken by several characters to uncover the secret of a mysterious device, the Schwarzgerät ("black device"), which is slated to be installed in a rocket with the serial number "00000".