Amon Carter Museum of American Art — Libraries in Fort Worth, TX

Mesklin is a fictional planet created by Hal Clement and used in his hard science fiction stories, starting with Mission of Gravity (1954). Alongside the novel's original 1953 serialization in Astounding Science Fiction, Clement published an essay titled "Whirligig World" on how he designed the planet. The idea came from an object that was believed to exist in the 61 Cygni system, possibly an extrasolar planet. The planet is distinctive for the interaction of its strong gravity with the centrifu