The non amateur stuff. Hawking, black holes, that sort of thing
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Astrophysicists have concluded that the temporary dimming of the celebrated red supergiant was not, as rumoured, a sign of imminent core collapse, followed by a supernova explosion, nor as was theorised by an obscuring dust cloud. Research published in Astrophysical Journal shows that the dimming was caused by a giant star spot that caused a 40 per cent dimming, making the star 10 per cent cooler. It's reckoned that it could be a million years for Betelgeuse to go supernova, which gives us plenty of time to appreciate this beautiful star.