In an image made from video, astronaut Ronald Garan Jr. dangles outside the International Space Station during the last spacewalk of NASA's space shuttle era, with fellow astronaut Michael Fossum (not shown), Tuesday, July 12, 2011. (AP Photo/NASA)
July 12, 2011 7:37:27 AM PDT
By MARCIA DUNN AP Aerospace Writer
CAPE CANAVERAL, Fla. - July 12, 2011 --
The last spacewalk of NASA's space shuttle era got under way Tuesday nearly 250 miles above Earth.