05-13-09

who?
NASA astronaut
What?
Mike Massimino made Twitter history with a 139-character post to the micro-blogging site -- the first person to do so from space.
When?
4:30 p.m. ET Tuesday
Where?
from space
Why?
How?
http://www.cnn.com/2009/TECH/space/05/13/twitter.space/index.html