Back in February, the Myth Reading Group came upon this news item from the SETI Institute:
Images taken by the Hubble Space Telescope in 2011 and 2012 revealed two previously unknown moons of Pluto. So far, we have been calling them “P4” and “P5”, but the time has come to give them permanent names. If it were up to you, what would you choose? By tradition, the names of Pluto’s moons come from Greek and Roman mythology, and are related to the ancient tales about Hades and the Underworld.
SETI ran an open ballot at plutorocks.com which encouraged us to hold our own. The MRG ballot resulted in a three-way tie between Orpheus, Persephone and Sisyphus. The final decision of the International Astronomical Union was announced last month (as reported here), so we may now welcome Kerberos and Styx to the distant heavens.