Someone recently gave me a bumper sticker that reads “Honk if Pluto is a Planet.” The message conveys the controversy from the International Astronomical Union’s (IAU) decision to demote Pluto to “dwarf planet” status. But before Pluto lost its planetary stripes, there was Ceres.
Glenn Chaple’s observing basics: Spy a solar system wanderer
November 2007: Before Pluto lost its planetary status, there was Ceres.
