An extraterrestrial rock that was found in more than 25 years ago may be the first evidence on Earth of a rare supernova explosion, scientists have claimed.
Researchers analysed the Hypathia stone and found that its chemical makeup and patterning suggest it contains bits of the dust and gas cloud which surround a 'standard candle' (or type Ia) supernova.
These stellar explosions, which are some of the most energetic in the Universe, happen when a dense white dwarf star gobbles up another nearby star.
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