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29 January, 04:53

Describe the evidence indicating that a black hole may be at the center of our Galaxy.

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  1. 29 January, 06:00
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    The most compelling evidence consists of recorded stellar tracks within 1 arcsecond (0.13 light-years) of the galactic center, whose orbital periods and radii indicate the presence of a central source of gravity having a mass equivalent to more than 4 million Suns, yet being concentrated within a radius less than 17 light-hours. Other evidence includes unique radio and X-ray emissions from the galactic center
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