WASHINGTON, July 20 (Xinhuanet) -- NASA said Wednesday it will attempt to launch space shuttle Discovery on July 26 on the first shuttle mission since the 2003 Columbia disaster.

    The decision was made after engineers found the most likely causes of the fuel sensor problem that delayed the launch of Discovery one week ago, NASA officials told a televised news conference.

    "We found the most probable causes" for the sensor problem, saidspace shuttle program manager Bill Parsons.

    The upcoming launch try is set for 10:44 a.m. EDT (1444 GMT) Tuesday, at the Kennedy Space Center, Cape Canaveral, Florida.

    The sensor problem was found during the pre-launch test on July13. NASA has had 12 teams of engineers around the country at work around the clock to check for the cause. Enditem