Astronomers discover a chunk of a planet's core around a long-dead star. By finding the vaporized remains of a ancient planet's metallic core, astronomers are getting a glimpse into the future fate of our solar system.

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Astronomers discover a chunk of a planet's core around a long-dead star. By finding the vaporized remains of a ancient planet's metallic core, astronomers are getting a glimpse into the future fate of our solar system.