Back to Article List From the January 2009 issue What was the most powerful supernova blast ever seen? Samuel Heinitz, Edmond, Oklahoma By Astronomy Staff | Published: January 26, 2009 | Last updated on May 18, 2023 Key Takeaways: The brightest supernova ever observed was SN 2005ap. However, SN 2006gy radiated the highest total visible light.
