An illustrated timeline of how a comet formed Pluto's heart-shaped Sputnik Planitia basin. Photo: James Tuttle Keane; Shutterstock; Dave Mosher/Business Insider

A comet strike on Pluto hints it may be hiding a giant, habitable ocean

Dwarf planet could adopt moniker of ‘ocean world’

Topic |   Business Insider

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An illustrated timeline of how a comet formed Pluto's heart-shaped Sputnik Planitia basin. Photo: James Tuttle Keane; Shutterstock; Dave Mosher/Business Insider
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