Flush with the success of Under The Dome, CBS is already trying to replicate its formula by combining several of the show's key elements: a high concept, a 13-episode run, a summer airdate in 2014, and not least of all, executive producer Steven Spielberg. The resulting concoction is Extant, a "futuristic drama" about a female astronaut who returns from a year in space bearing mysteries, unanswered questions, and—if all goes well—good DVR numbers.