. . . . "2017" . . "91" . "spacewalk on March 24, 2017" . "11" . . . . . . . . . "two Extra-Vehicular Activities" . . "2017 in spaceflight" . "July" . . . "83" . "2" . . "6" . "86" . "2017 in spaceflight" . . "4" . . . "launched in 2017" . "'17" .