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SPACE: A RADIATION 'ECHO' FROM A SUPERMASSIVE BLACK HOLE IS SPREADING ACROSS THE GALAXY
BBC Science Focus
|August 2023
The sleeping cosmological giant woke up around 200 years ago and devoured everything in the vicinity, releasing intense amounts of radiation in the process
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Around 200 years ago, Sagittarius A* (Sgr A*), the black hole at the centre of the Milky Way, suddenly burst into life. It began consuming as much nearby cosmic material as it could, and released radiation a million times stronger than it releases today, before returning to a dormant state. That's according to a new discovery made by researchers at the Strasbourg Astronomical Observatory in France, using measurements taken by NASA's Imaging X-ray Polarimetry Explorer (IXPE) satellite.
Denne historien er fra August 2023-utgaven av BBC Science Focus.
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