Since then, astronomers have been calling them P4 and P5, but now, they've asked the public to weigh in on the name choice for these two mini-moons.
That's great, but what really excited me was that among the names inspired by Greek and Roman Mythology was the name Styx. While Styx is the name of a river that separates Earth from the underworld in Greek Mythology, most people probably think of the epic 70s and 80s rock band first. I know I did. And I know what name I'm voting for.
Click here to vote (you can do so once a day until noon on Feb. 25). You can also fill in the write-in ballot, to nominate your own favorite name, which I'm sure will probably be carefully monitored for joke names. Styx is currently winning the vote with more than 1,800 votes, with Cerberus in second place. Let's keep it that way!