Than, Ker (SEPTEMBER 11, 2013). “New Role for Disabled Kepler? Finding Exotic Alien Worlds”. National Geographic Daily News. ナショナルジオグラフィック協会. 2020年1月18日閲覧。 “In the TV series Dr. Who, the main character once found himself on a dark planet orbiting a black hole, an improbable situation that was reflected in the episode's title: "The Impossible Planet."”