Friday, November 8, 2019

"A circle in thin ice in Lake Baikal, Russia" photographed from space on 23 April 2009 by an International Space Station astronaut. "Throughout April, the circles are persistent -- they appear when ice cover forms, and then disappear as ice melts." The "origin of the circles is unknown." [4256x2913]


https://go.nasa.gov/34CHF1E via /r/spaceporn http://bit.ly/32uqpdJ

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