CAPE CANAVERAL, Fla. -- At Kennedy Space Center in Florida, NASA is hosting a two-day Tweetup for 150 of its Twitter followers of space shuttle Endeavour's STS-134 mission. A Tweetup is an informal meeting of people who use the social messaging medium Twitter. This Tweetup is an opportunity to learn more about NASA, explore Kennedy Space Center and experience a space shuttle launch. Actor_Director LeVar Burton, participating in the Tweetup is interviewed by Kennedy's News Chief Allard Beutel. Endeavour and its crew will deliver the Express Logistics Carrier-3, Alpha Magnetic Spectrometer-2 (AMS), a high-pressure gas tank and additional spare parts for the Dextre robotic helper to the International Space Station. Launch is scheduled for April 29 at 3:47 p.m. EDT. This will be the final spaceflight for Endeavour. For more information visit, www.nasa.gov_mission_pages_shuttle_shuttlemissions_sts134_index.html. Photo credit: NASA_Jack Pfaller