Most recently, the European telescope has detailed the composition of Tycho, identifying in the supernova remnant many of the same chemical building blocks used to make the planets and life on Earth. ... In fact, the initial explosion probably appeared as one of the brightest stars in the sky. ... Such explosions also blast debris into space where another generation of stars and planets form, but when it comes to the heaviest elements, such as gold and platinum, astronomers are not sure that supernovae can create enough of them. Most of these metals mus...

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