Scientists have found a superbright supernova in a galaxy 10 billion light-years away, which erupted about 3.5 billion years after the Big Bang, during what the astronomers called the "noon of the universe". Ordinary supernovas are the days when massive stars die. It is caused by a violent explosion. The brightness of superbright supernovae is 10 to 100 times higher than that of ordinary supernovae, and the formation mechanism is not clear at present. The galaxies where superbright supernovas found in the past are all relatively small, making scientists think that small galaxies lack heavy elements The environment is conducive to the generation of superbright supernovae. The galaxy found in this superbright supernova is an ordinary mass galaxy, which makes people rethink the formation of superbright supernovae. This means that the Milky Way may also have the conditions to generate superbright supernovae. The following statements are consistent with the original:. ['Super-bright supernova occurred during the most intense "noon of the universe" during star formation.', 'The environment in which small galaxies lack heavy elements is actually not conducive to the generation of superbright supernovae.', 'Ordinary massive galaxies may have had the conditions to produce superbright supernovae.', 'A violent explosion when a massive star dies does not produce a superbright supernova.']