WASHINGTON, DC.- The National Air and Space Museum and NASA will invite 30 of their social media followers to the first “NASA Social” April 19 to welcome space shuttle Discovery to the National Collection. Registration opens at noon EDT Thursday, March 15, and closes at noon EDT Friday, March 16. Registration is at www.nasa.gov/social. Thirty participants will be randomly selected from online registrations. A “NASA Social” is an event for people who use one of NASA’s social media accounts. Each participant may invite one guest and all registrants must be 13 or older. The social media group will tour the Steven F. Udvar-Hazy Center; speak with museum curators, NASA scientists and engineers; and will have the once-in-a-lifetime opportunity of viewing and photographing space shuttles Enterprise and Discovery together. Participants will also meet fellow space enthusiasts who are active on social media