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There will be an once-in-a-lifetime event in the night sky over the next few days – as a star exploding 21 million light years away becomes so bright it will be visible through binoculars across Britain。 The supernova is predicted to reach its brightest between September 9 and 12, and will be the brightest since 1954, visible all over Britain, weather permitting. A team of scientists at Oxford University are tracking it using the Hubble Space Telescope。 50年来最亮超新星爆炸 英国境内可用望远镜观看 Dr Mark Sullivan, the astrophysicist leading the Oxford team examining the supernova, said: "This is accessible to anyone with a decent pair of binoculars. For many it could be a once in a lifetime chance to see a supernova blossom and then fade before their eyes. We may not see another like it for over 100 years." It will appear bluish-white, just above and to the left of the last two stars in the Big Dipper. Watchers are advised to stay away from street lights for maximum visibility. The matter from the explosion will eventually form new stars and planets. Such events, which include one in five supernovae, provide scientists with essential information on how the universe expands。 据英国《每日邮报》9月8日报道，在未来几天，将会有一颗百年一遇的超行星在夜间爆炸，这颗行星距离地球2100万光年，所以它极其明亮，只要在英国境内，使用双筒望远镜就可以观测到。 | 
