The Faint Unicorn Constellation Dates to 1612

The constellation Monoceros (the Unicorn) is faint enough that many stargazers overlook it. Dutch astronomer Petrus Plancius introduced it on a celestial globe in 1612. It is one of only two constellations from that globe still in use today, along with Camelopardalis. The globe introduced eight new constellations, and most were not adopted by other cartographers or astronomers. Plancius also introduced the constellation Columba, the Dove, in 1592. Despite its obscurity, Monoceros contains notable deep-sky objects, including the Rosette Nebula and a rare type of multiple-star system.