国产热热热精品,亚洲视频久久】日韩,三级婷婷在线久久,99人妻精品视频,精品九热人人肉肉在线,AV东京热一区二区,91po在线视频观看,久久激情宗合,青青草黄色手机视频

Global General

Special

Newsmaker

Asia Pacific

America

Middle East

Europe

Africa

NASA aims for March 12 space shuttle launch

(Agencies)
Updated: 2009-02-26 13:44

CAPE CANAVERAL, Fla. – NASA is aiming to launch the space shuttle Discovery next month after repeated delays caused by critical valves. Shuttle managers said Wednesday they hope to launch on March 12, a full month after the original launch date of Feb. 12.

NASA workers watch as the space shuttle Discovery is moved to the launch site at the Kennedy Space Center in January. [Agencies]

If the shuttle isn't flying by March 13 or 14, it will have to wait until April to make way for a Russian Soyuz rocket that's supposed to blast off with a fresh crew for the international space station.

NASA kept postponing the launch after having problems with hydrogen gas valves. One of these valves broke during November's launch of Endeavour.

Discovery's three valves are being replaced with valves that engineers hope will be less likely to crack. NASA will review all the work next week before committing to a March launch.