WASHINGTON, Feb. 20 (Xinhua) -- The U.S. space shuttle Atlantis touched down at Kennedy Space Center in Florida at 9:07 a.m. EST (1407 GMT), concluding its 13-day construction flight to the International Space Station, according to NASA TV live broadcasting.

The morning at Kennedy brought a modest layer of thin clouds and very light winds. NASA's mission control center gave the go-ahead for Atlantis' de-orbit, which slowed the shuttle down so it could enter the atmosphere and glide to the runway at Kennedy.

The U.S. space shuttle Atlantis lands at the Kennedy Space Center in Cape Canaveral, Florida Feb. 20, 2008. The shuttle returned from a 13-day mission to the International Space Station.