This week’s One Word Sunday photo challenge is “plain or plane.”


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SR-71 Blackbird at National Air & Space Museum Steven F. Udvar-Hazy Center


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Serengeti plain at the border between Tanzania and Kenya.


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Venus, Jupiter and Mars mark points on the plane of the ecliptic in the pre-dawn sky of the Masaai Mara.

See the other “plane or plain” posts here.