Black holes have always been difficult to accept, which is why several studies over the years have proposed so-called exotic compact objects, or ECOs, in lieu of black holes. These hypothetical objects—which go by names like gravastars and fuzzballs—appear to explain all the black hole observational evidence without having any of the apparent black hole paradoxes. A new study of one class of ECO, the bosonic star, however, pokes holes in this argument [1].
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