This planetary remnant somehow survived the death of its sun

A rare rocky relic orbiting a white dwarf may give insight into the future of our solar system

planetesimal

PLUCKY PLANETESIMAL  The small, dense remnant of a planet (illustrated) survived the collapse of its sun into a white dwarf, and is now skirting the dead star with a calcium gas stream (yellow) trailing behind it, researchers report.

Mark Garlick/Univ. of Warwick

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