Nature Astronomy, Published online: 15 April 2024; doi:10.1038/s41550-024-02248-1

Foreign material delivered as a giant impact can dominate large portions of icy dwarf planets, according to impact simulations. This scenario may explain the peculiar shape and location of the Sputnik Planitia region on Pluto, without the need for a present-day subsurface ocean.

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