A record-breaking black hole was hiding in the Milky Way just 2,000 light years away, so far unnoticed: it is the most massive black hole in our galaxy born from the collapse of a star, with a mass that is 33 times greater than that of the Sun [...]. The discovery [...] saw the collaboration of the National Institute of Astrophysics, the Italian Space Agency, the Universities of Catania, Turin and Padua and the International School for Advanced Studies in Trieste.
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