The object that would become known as both the Great January Comet of 1910 and the Daylight Comet was first seen Jan. 12 in the Southern Hemisphere. It’s unclear who precisely discovered it, but some newspapers at the time pointed to observers in South Africa. On Jan. 17, 1910, the comet reached perihelion — its Continue reading "Jan. 17, 1910: The Great Comet reaches perihelion" The post Jan. 17, 1910: The Great Comet reaches perihelion appeared first on Astronomy Magazine .