Ernst Zinner (2 February 1886 – 30 August 1970) was a German astronomer and noted historian of astronomy. He rediscovered the Comet Giacobini-Zinner, which had been previously discovered by Michel Giacobini in 1900. Zinner crater on the moon is named after him. February 2 is the 33rd day of the year in the Gregorian Calendar. ... 1886 (MDCCCLXXXVI) is a common year starting on Friday (click on link to calendar) // Events January 18 - Modern field hockey is born with the formation of The Hockey Association in England. ... August 30 is the 242nd day of the year in the Gregorian Calendar (243rd in leap years), with 123 days remaining. ... 1970 (MCMLXX) was a common year starting on Thursday (the link is to a full 1970 calendar). ... A giant Hubble mosaic of the Crab Nebula, a supernova remnant. ... Table of astronomy, from the 1728 Cyclopaedia Astronomy is probably the oldest of the natural sciences, dating back to antiquity, with its origins in the religious practices of pre-history: vestiges of these are still found in astrology, a discipline long interwoven with astronomy, and not completely different from it... Comet Giacobini-Zinner was discovered by Michel Giacobini (Nice, France) in Aquarius on December 20, 1900. ... Michel Giacobini (1873 – 1938) was a French astronomer. ... 1900 (MCM) was an exceptional common year starting on Monday of the Gregorian calendar, but a leap year starting on Saturday of the Julian calendar. ... Zinner is a tiny lunar impact crater located due north of Schiaparelli crater on the Oceanus Procellarum. ... Adjective lunar Bulk silicate composition (estimated wt%) SiO2 44. ...

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