Number 221 (Story #3), April 10, 1995 by Phillip F. Schewe and Ben Stein OBJECTS AND FEATURES IN THE HEAVENS must be named according to a systematic protocol laid down by the International Astronomical Union (IAU). For example, features on Venus must bear female names: craters may be named after mortal women, but ridges must be named for sky goddesses. Uplands are named after goddesses of love and plains after mythological heroines. On Mercury valleys are named after radio telescopes while scarps take the names of famous ships of discovery. Features on Uranus' moon Puck are named after mischievous spirits, while features on Neptune's moons are all watery spirits. Little did Virgil know that persons and places in his epic poem Aeneid would 2000 years later be affixed to maps of Saturn's moon Dione. And so on. (Sky & Telescope, May.)