Raw Video: Shuttle Astronauts on Final Spacewalk

Astronauts stepped out for the last spacewalk of NASA's shuttle era. Space station astronauts Michael Fossum and Ronald Garan Jr. ventured out nearly 250 miles above Earth Tuesday

• 2011-07-12T19:07:49+00:00
• Duration: 02:03

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Science & Technology , final, spacewalk, video, performance, amaizng, NASA, video de la nasa, amazing, ultima caminata video increible