Astronaut Available to Discuss First, Next 50 Years of Spacewalking via NASA http://t.co/IFQiAKCmGb

Astronaut Available to Discuss First, Next 50 Years of Spacewalking via NASA http://t.co/IFQiAKCmGb

— John Prieto (@prietoj) May 27, 2015

from Twitter https://twitter.com/prietoj

May 27, 2015 at 12:57PM
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