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The Milky Way’s central supermassive black hole, Sagittarius A*, is 26,000 light-years away from us. It is four million times ...
ESO/L. Calçada, N. Risinger (skysurvey.org), DSS, VISTA, VVV Survey/D. Minniti DSS, Nogueras-Lara et al., Schoedel, NACO, ...