Stormclouds above Cape Canaveral pushed back the launch of the space shuttle Endeavour on Thursday. NASA meteorologists had been predicting bad weather all week, so the scrub came as no surprise. The launch was pushed back to Friday evening, but even that launch date is at risk, as the stormy weather is expected to last through the weekend. When Endeavour does get into space, it will deliver Expedition 5 to the International Space Station, and return the previous crew back to Earth.