by Erik Sowa and Stephanie Schierholz
With 110 twitter accounts, 20 tweeting astronauts, an Image of the day posted to Facebook and more, NASA's social media strategy is all about extending the space "experience". For the last shuttle launch of Atlantis, 150 lucky individuals were invited to attend the official NASA Tweetup to experience the lift-off first-hand, with exclusive behind the scenes access to astronauts, facilities, lectures and more. Hear from Erik Sowa, NASA Tweetup attendee and director of engineering at ExactTarget's Social Media Lab, and Stephanie Schierholz, NASA's head of social media, as they discuss the process behind this groundbreaking event.