If the Sun Died, by R F Starzl (novelette)

The human race has deteriorated, and will die when the machines that have kept them alive in Subterannea for tens of millennia after the supposed death of the Sun eventually stop working. But there are those who believe that the Sun did not die, and the survival of humanity depends on it once again venturing Outside. "If the Sun Died" appeared in "Astounding Stories," August 1931, pages 198 - 213. ===== Roman Frederick Starzl (1899–1976) was an American writer. He, and earlier, his father (John V. Starzl), owned the Le Mars Globe-Post newspaper of Le Mars, Iowa. His writing is largely forgotten now, but he was called a "master" by the pioneer of space opera E. E. "Doc" Smith. Starzl's Interplanetary Flying Patrol, in "The Hornets of Space," may have influenced Smith's Galactic Patrol.