Within the next year to 18 months, stargazers around the world will witness a dazzling celestial event as a “new” star appears in the constellation Corona Borealis, also known as the Northern Crown.For several days, this star will shine brightly, becoming one of the most luminous objects in the night sky, visible to the naked eye. However, this star is not new — it is an ancient celestial body undergoing a dramatic explosion approximately 3,000 light-years from Earth, expelling an Earth-sized mass of hot gas into space.