In the annals of human observation, SN 1006 reigns supreme as the brightest supernova ever recorded. According to historical records from the Song Dynasty and beyond, this stellar explosion in the constellation Lupus reached an astonishing apparent magnitude of -7.5. To put this into perspective, it was over 10 times brighter than Venus, casting enough light at midnight for ancient observers to read by. For comparison, the famous SN 1054, which birthed the Crab Nebula, reached a peak magnitude of only about -6. While ancient civilizations interpreted this 'guest star' as a profound political omen, modern astrophysicists view it as the ultimate laboratory for studying Type Ia supernovae, the 'standard candles' of our universe. Today, 1,020 years later, the event itself has faded, yet the remnant’s shockwave continues to expand at thousands of kilometers per second—a silent, lingering echo of the most spectacular 'firework' in human history.