NASA was on course to finish repairs for its new June 17 launch date for the shuttle Endeavour, after its scheduled space station mission last week was postponed because of a gas leak, the group said in a Tuesday statement. NASA will attempt to again launch the space shuttle Endeavour's mission on Wednesday morning from NASA's Kennedy Space Center in Florida, NASA said in a statement. The hydrogen gas leak in one of Endeavour's venting systems was detected early on Saturday just hours before the shuttle's planned launch - the system in question is used to carry excess hydrogen safely away from the launch pad.