Pluto, formerly known as a planet
As far as I'm concerned, Pluto deserves at least honorary recognition as a planet. After all, Pluto even has its own Sailor Scout, and that's reason enough for me. Anyway, since 2011, two new moons have been discovered orbiting Pluto, and because the public will always love the underdog, you now have the opportunity to help name those moons. Courtesy of the SETI (the Search for Extraterrestrial Intelligence) Institute, you can vote on your favorite names, taken from Greek and Roman mythology.
Current options include Hercules-Heracles, Hypnos, Persephone, Styx, Vulcan, Elysium, Tantalus, and lots of other options. You can also submit your own names for consideration. Vote at PlutoRocks, and hurry! The polls close at noon, EST on Monday, February 25, 2013.