The Venus Equilateral series is a set of 13 science fiction short stories by American writer George O. Smith, concerning the Venus Equilateral Relay Station, an interplanetary communications hub located at the L4 Lagrangian point of the Sun-Venus system. Most of the stories were first published in Astounding Science Fiction between 1942 and 1945. The setting for most of the stories in the series is Venus Equilateral, a space station three miles long and one mile in diameter that serves as a communications relay between Venus, Earth, and Mars whenever interference from the Sun prevents line-of-sight communication between them. Venus Equilateral was formed out of a nickel-iron asteroid that was moved into Venus' L4 point. At the time the stories take place, the asteroid has been completely reworked, resulting in a burnished steel cylinder with a large docking port at one end and a bank of communications dishes at the other.
