Supernova Timeline By Corco715 Oct 17, 1604 Johannes Keppler observes SN 1604 Jan 1, 1885 Obeservation of Supernova S Andromedae Jan 1, 1931 Super-Novae term first used Term super-novae term first used in 1931 Mar 2, 2022 SN 185 SN 185 discovered in 185 AD by Chinese Astronomers, This is known as the first recorded sighting.