Clues to our past

Down to Earth - - SCIENCE BYTES -

AS­TRONOMERS HAVE iden­ti­fied some of the old­est stars in our galaxy, which could con­tain vi­tal clues about the early uni­verse, in­clud­ing an in­di­ca­tion of how the first stars died. Th­ese stars, which have been at the very cen­tre of the Milky Way, also con­tain chem­i­cal fin­ger­prints which in­di­cate that the ear­li­est stars may have died in spec­tac­u­lar deaths known as hy­per­novae—10 times more en­er­getic than a reg­u­lar su­per­nova. Na­ture, Novem­ber 11

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