NASA astronaut Barry "Butch" Wilmore is seen in this photo taken by fellow spacewalker Terry Virts, Feb. 21, 2015. The photo received more than 54,000 likes on Facebook in a short time. (Photo/Agencies)
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NASA astronaut Barry "Butch" Wilmore is seen in this photo taken by fellow spacewalker Terry Virts, Feb. 21, 2015. The photo received more than 54,000 likes on Facebook in a short time. (Photo/Agencies)