"800-Year-Old Supernova SN 1181: A Spectacular Celestial Event"

Telescopes have captured the remnants of a supernova explosion, known as SN 1181, which was visible in the night sky in the year 1181 and appeared as a new star in the constellation Cassiopeia. Historical records of this event have been confirmed through the identification of the supernova remnant, Pa 30, using data from multiple telescopes. The explosion is determined to be a sub-luminous Type Iax event, resulting from the merger of two white dwarf stars, and has left behind a hot, 'undead' star projecting stellar winds into space at high speeds.