800-Year Mystery Solved: 'Half-Exploded' Supernova Pa 30's Sparkler Secret Revealed

• Pa 30, a unique supernova remnant, resembles a sparkler with long, straight streaks, unlike typical cauliflower-shaped debris.
• Syracuse University's Eric Coughlin discovered Pa 30 is a 'fizzled' Type Iax supernova where a white dwarf survived a partial explosion.
• Its sparkler appearance is due to 15,000 km/s winds carrying heavy elements interacting with lighter gases, causing Rayleigh-Taylor instability.
• Pa 30 is linked to a 'guest star' observed by Chinese and Japanese astronomers in 1181, solving an 800-year-old celestial mystery.
• Continuous stellar winds prevent the streaks from dispersing, making it look like a 'frozen explosion', similar to the 1962 'Kingfish' nuclear test.

Why It Matters: Pa 30 reveals a rare 'half-exploded' supernova, linking ancient observations with modern science.