 Cooper and TARS take a spacecraft to rejoin Brand and CASE on Edmunds' habitable planet.The premise for "Interstellar" was conceived by producer Lynda Obst and theoretical physicist Kip Thorne, who collaborated on the film "Contact" (1997), and had known each other since Carl Sagan set them up on a blind date.The two conceived of a scenario, based on Thorne's work, about "the most exotic events in the universe suddenly becoming accessible to humans," and attracted filmmaker Steven Spielberg's interest in directing.