An international team of scientists led by the University of Birmingham in the UK (United Kingdom)and the Harvard-Smithsonian Center for Astrophysics in the US (United States), have observed the biggest supernova (stellar explosion) named This supernova is 10 times more powerful than a normal supernova but is also about 500 times brighter than that. Key Points: The supernova was detected by the PanSTARRS (Panoramic Survey Telescope and Rapid Response System Survey) located at Haleakala Observatory, Hawaii, US, on 22 February 2016, in a galaxy 4.6 billion light-years from Earth. A light-year is the distance light travels in a year, 5.9 trillion miles (9.5 trillion km).