Photographic documentation showing astronauts in Extravehicular Mobility Units working on both Experimental Assembly of Structures in Extravehicular Activity and on Assembly Concept for Construction of Erectable Space Structures in the payload bay of the orbiter Atlantis during STS-61B.[4235 x 4227]

http://bit.ly/2E57tdv via /r/spaceporn http://bit.ly/2SkGRIO