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Accretion of a giant planet onto a white dwarf star
Nature, Published online: 04 December 2019; doi:10.1038/s41586-019-1789-8
Observations of an accretion disk around a hot white dwarf star reveal that the chemical abundances in its disk are similar to those thought to exist deep in icy giant planets, so the white dwarf must be accreting a giant planet.