Quasi-star
Hypothetical early-universe star with a black hole core / From Wikipedia, the free encyclopedia
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A quasi-star (also called black hole star) is a hypothetical type of extremely massive and luminous star that may have existed early in the history of the Universe. They are thought to live around 7-10 million years. Unlike modern stars, which are powered by nuclear fusion in their cores, a quasi-star's energy would come from material falling into a black hole at its core. Quasars emit massive amounts of energy across the electromagnetic spectrum, from radio waves to gamma rays. They were first proposed in the 1960s and have since provided valuable insights into the early universe, galaxy formation, and the behavior of black holes. Although they have not been observed, they are considered to be the largest possible stars in the universe.[1]