Astronomers have had a mystery on their hands for the past year: what exactly are the powerful quasars they are seeing? Today, researchers from the University of California, San Diego, have revealed what they believe is the answer - these quasars are actually the remnants of an ancient, extinct supermassive black hole.

This discovery is a major breakthrough, as it provides us with a better understanding of how supermassive black holes form and evolve over time. According to the study, the quasars are the product of a rapid growth phase of a supermassive black hole in the early universe. This growth phase was so rapid that it created a huge amount of energy, resulting in the powerful quasars we are seeing today. The research team believes that these quasars could represent a missing link in the evolution of supermassive black holes, helping us to better understand how they formed billions of years ago.

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source: Phys.org