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STS-135 Headquarters Tweetup (201110130001HQ) | by NASA HQ PHOTO
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STS-135 Headquarters Tweetup (201110130001HQ)

STS-135 NASA Tweetup participant Leo Lorenzo Luis, from the Philippines, works with two devices while attending a Tweetup conducted by STS-135 crew members Commander Chris Ferguson and Mission Specialist Sandy Magnus, Thursday afternoon, Oct. 13, 2011, at NASA Headquarters in Washington. About 150 NASA Twitter followers participated in the event. Photo Credit: (NASA/Paul E. Alers)

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Taken on October 13, 2011