Tuesday, November 17, 2020

About 3.5 million years ago, the supermassive black hole at the center of our galaxy unleashed an enormous burst of energy. Our primitive ancestors, already afoot on the African plains, would have witnessed this flare as a ghostly glow that may have persisted for a million years. (Credit: NASA/ESA)


https://bit.ly/36J4x2m via /r/spaceporn https://bit.ly/2H8SYbM

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