Discovery Launches on Final Mission Toward a Busy International Space Station

The Space Shuttle Discovery is fueled and waiting on the launchpad for its 4:50 p.m. EST liftoff for the International Space Station on what will be the veteran spacecraft's final journey into orbit. The mission will carry a crew of six skyward along with important spare parts for the ISS as well as the Express Logistics Carrier-4, part of a series of unpressurized payload platforms that provide mechanical support for the ISS. Update: We have liftoff!