First NASA Astronaut to 'Check In' From Space Hosts DC Tweetup

WASHINGTON, Feb. 28, 2011 /PRNewswire-USNewswire/ -- NASA invites its Twitter followers to a special Tweetup with astronaut Doug Wheelock at 3 p.m. EDT on Wednesday, March 16. The event will take place in the James E. Webb Memorial Auditorium at NASA Headquarters, 300 E St. SW, Washington. (Logo: &