Sagittarius A star, the supermassive black hole at the center of the Milky Way galaxy (IMAGE)
Caption
University of Illinois Urbana-Champaign physics professor Charles Gammie and his team contributed to research that produced the first direct visual evidence of the Sagittarius A star, the supermassive black hole at the center of the Milky Way galaxy.
Credit
Image courtest Event Horizon Telescope collaboration
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