"Islands off the coast of West Africa, like wing tips cutting through the air, form giant swirling Von Karman vortices showing up in the clouds above," writes NASA Astronaut Christina H. Koch on 5 June 2019. Earth photographed from the International Space Station. Photo credit: NASA

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Submitted June 10, 2019 at 09:28PM by trot-trot http://bit.ly/2Ivfloy