"The Dying Night" is a science fiction short story by Isaac Asimov. The story first appeared in the July 1956 issue of The Magazine of Fantasy & Science Fiction, and was reprinted in the collections Nine Tomorrows (1959), Asimov's Mysteries (1968), and The Best of Isaac Asimov (1973). "The Dying Night" is Asimov's third Wendell Urth story.Three astronomers, who have been working on the Moon, Mercury and the asteroid Ceres, meet for the first time in ten years at a convention on Earth. They also meet a former colleague of theirs, Romero Villiers, who had to stay on Earth because of illness. Villiers claims to have invented a mass-transference/teleportation device, but dies under suspicious circumstances before he can demonstrate the device to his friends.