RT @NASA_Johnson: Today, the #ISS crew prepped for Aug. 18 spacewalk and @AstroRobonaut upgrades. go.nasa.gov/1vbSOD5 http://t.co/Qj588pVurP
RT @NASA_Johnson: Today, the #ISS crew prepped for Aug. 18 spacewalk and @AstroRobonaut upgrades. go.nasa.gov/1vbSOD5 http://t.co/Qj588pVurP