Teachers team up for today's spacewalk / Delta launch early Tuesday

     NEWSALERT: Monday, March 23, 2009 @ 1314 GMT
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         The latest news from Spaceflight Now


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SPACE SHUTTLE MISSION VIDEO!
Full coverage of Discovery's flight
http://www.spaceflightnowplus.com/index.php?k=STS-119
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TWO FORMER TEACHERS SET FOR TODAY'S SPACEWALK
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Astronauts Ricky Arnold and Joe Acaba, both former school teachers, are
preparing to venture back outside the international space station today
for a planned six-and-a-half-hour spacewalk. The primary objectives are to
complete the deployment of an external cargo mounting mechanism; to extend
another cargo carrier on the far side of the station's solar power truss;
to lubricate the grappler on the station's robot arm; to reconfigure a
wiring patch panel; and to reposition an equipment cart.

 http://spaceflightnow.com/shuttle/sts119/status.html


REPLACEMENT SATELLITE FOR GPS NETWORK SET TO LAUNCH
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A Delta 2 rocket plans to make a thunderous predawn ascent out of Cape
Canaveral Air Force Station on Tuesday and hurl a new navigation satellite
into the Global Positioning System. Liftoff time is 4:34 a.m. EDT. Follow
the countdown and launch in our live Mission Status Center:

 http://spaceflightnow.com/delta/d340/status.html


DISCOVERY MOVES STATION TO EASE SPACE DEBRIS CONCERN
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Discovery commander Lee Archambault maneuvered the shuttle-space station
"stack" Sunday to avoid multiple close encounters with a piece of Chinese
space junk that could have posed a threat during a third and final
spacewalk Monday. Space station commander Mike Fincke, meanwhile, made
solid progress with lab's urine recycling system and resumed testing late
in the day after resolving a snag earlier in the day.

 http://spaceflightnow.com/shuttle/sts119/090322fd8/index4.html