A fueling test on space shuttle Endeavour uncovered no hydrogen gas leaks and paved the way for another launch attempt late next week for the delayed mission.
Last month, potentially dangerous leaks of hydrogen gas thwarted back-to-back launch attempts at Cape Canaveral.
"Nothing in this business is ever guaranteed, but this one I feel really good about, that we got that problem licked and we're not going to see a . . . leak again on the next launch attempt," said Mike Moses, a NASA launch manager.