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Scientists watched a 'reappearing supernova' explode 5 times in a row — and it could help reveal how fast the universe is expanding
1 year ago
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After showing up five times in Hubble images, a 'reappearing supernova' is helping scientists solve one of astronomy's biggest mysteries.
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Scientists watched a 'reappearing supernova' explode 5 times in a row — and it could help reveal how fast the universe is expanding
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