Lockheed Martin held their first Tweetup this week, inviting fans to see the last F-22 roll out of the factory. So what exactly is a Tweetup, and how did they start?
December 20, 2011
| By Heather Goss
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Air & Space/Smithsonian magazine has been delighting aerospace enthusiasts with the best writing about their favorite subject since April 1986. As an adjunct of the Smithsonian Institution's National Air and Space Museum, Air & Space matches the grand scope of the Museum, encompassing every era of aviation and space exploration. With stories that range from the Wright Brothers to the design of NASA's next lunar lander, Air & Space emphasizes the human stories as well as the technology of aviation and spaceflight.