Feb. 18, 2011 Candrea Thomas Kennedy Space Center, Fla. 321-867-2468 candrea.k.thomas@nasa.gov Michael Curie Headquarters, Washington 202-358-1100 michael.curie@nasa.gov MEDIA ADVISORY: M11-033 NASA ANNOUNCES STS-133 PRELAUNCH EVENTS AND COUNTDOWN DETAILS CAPE CANAVERAL, Fla. -- News conferences, events and operating hours for the news center at NASA's Kennedy Space Center, Fla., are set for the final scheduled launch of space shuttle Discovery. Lift off is targeted for 4:50 p.m. EST on Thursday, Feb. 24, to begin the STS-133 mission to the International Space Station. A NASA blog will provide countdown updates beginning at 11:30 a.m. Feb. 24. Originating from Kennedy's Launch Control Center, the blog is the definitive Internet source for information leading up to lift off. During the mission, visitors to NASA's shuttle website can read about the crew's progress and watch the mission's two spacewalks live. As Discovery's flight concludes, the NASA blog will detail the spacecraft's return to Earth. For NASA's launch blog and continuous mission updates, visit: http://www.nasa.gov/shuttle Detailed lists of countdown milestones, news briefing times and participants, and hours of operation for Kennedy's news center and media credentialing office are available at: http://www.nasa.gov/mission_pages/shuttle/news The NASA News Twitter feed will be updated throughout the shuttle launch countdown, mission and landing. To follow, visit: http://www.twitter.com/nasa Mission Specialist Nicole Stott will be tweeting about her prelaunch preparations and is expected to provide updates to her Twitter account during the shuttle mission. Stott can be followed at: http://www.twitter.com/Astro_Nicole Free wireless Internet access is provided at the Kennedy Press Site news center and annex. Instructions for wireless access will be available at the news center. For NASA TV streaming video, scheduling and downlink information, visit: http://www.nasa.gov/ntv -end- To subscribe to the list, send a message to: ksc-subscribe@newsletters.nasa.gov To remove your address from the list, send a message to: ksc-unsubscribe@newsletters.nasa.gov