Photo taken on Aug. 6, 2005 shows the US space shuttle Discovery after it undocked from the International Space Station.

    CAPE CANVERAL, the United States, Aug. 9 (Xinhuanet) -- NASA gave up the second and last opportunity at 6:43 a.m. EDT (1043 GMT) for the space shuttle Discovery to land at the Kennedy Space Center (KSC) here on Tuesday, citing unfavorable weather conditions.

    NASA mission controllers now plan to land the shuttle at the primary backup landing site of Edwards Air Force Base, California, at 8:12 a.m. (1212 GMT), where forecast says weather conditions are better with clear sky and light winds.

    NASA earlier Tuesday wave off Discovery's first landing attemptat the KSC at 5:07 a.m. (0907 GMT) because of stormy weather off the Florida coast.

    The KSC was Discovery's launch site and the first choice for landing because it would save millions of dollars in costs of ferrying the spacecraft atop a jumbo jet back from the backup landing sites.

    Landing at the other sites would also cost NASA a week of preparation time that could be used to get Discovery ready for flight again. Enditem