<https://www.popsci.com/science/article/2013-07/colliding-dead-stars-created-earths-gold/#webpage>
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"2021-04-26T04:03:21+00:00"^^<http://schema.org/Date>
<https://www.popsci.com/science/article/2013-07/colliding-dead-stars-created-earths-gold/>