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"The Night Sky Two Million Years Ago: Did Homo erectus witness a huge flare from a supermassive black hole?"

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“The centres of most galaxies, including our own Milky Way, are thought to harbour supermassive black holes that are millions of times more massive than our Sun. Occasionally, these black holes swallow large amounts of gas; this leads to huge outbursts of energy and enables us to see galaxies out the edge of the Universe. Until recently, we had very little evidence that such an outburst might have happened in the Milky Way. In this talk, I will describe the story of how my colleagues and I discovered and interpreted the ‘fossil imprint’ of an explosion at the heart of our Galaxy that occurred about two million years ago.”

This talk is part of the Cambridge University Astronomical Society (CUAS) series.

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