On this day in space! Nov. 6, 1572: A German astronomer discovers the Tycho supernova with the naked eye, but everyone thought the cosmic explosion was a 'new star'

On November 6th, 1572, German astronomer Wolfgang Schulër made a groundbreaking observation of a celestial event that would become known as the Tycho Supernova. Utilizing only his unaided vision, Schulër witnessed a brilliant new star appearing in the constellation Cassiopeia. Contemporary accounts widely attributed this extraordinary phenomenon to the appearance of a ‘new star,’ reflecting a limited understanding of astronomical events at the time. The supernova’s brightness peaked within days and then rapidly faded over subsequent months, presenting a dramatic display for observers across Europe. This discovery marked one of the closest supernovae observed with the naked eye and significantly impacted early scientific thought regarding stellar evolution.