PARIS, France: Astronomers said on Friday they have identified the 'largest' cosmic explosion ever observed, a fireball 100 times the size of our Solar System that suddenly began blazing in the distant universe more than three years ago.
While the astronomers offered what they think is the most likely explanation for the explosion, they emphasised that more research was needed to understand the puzzling phenomenon.The explosion, called AT2021lwx, is not the brightest flash ever observed in the universe. That record is still held by a gamma-ray burst in October that was nicknamed BOAT — for Brightest Of All Time.
' Another possibility is what is called a tidal disruption event, when a star is torn apart as it is sucked into a supermassive black hole. But AT2021lwx is still three times brighter than those events, and Wiseman said their research did not point in this direction.The only somewhat comparable bright cosmic event is a quasar, when supermassive black holes swallow huge amounts of gas in the centre of galaxies.
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