A look at the first day of the final flight of space shuttle Discovery. Discovery lifted off from NASA's Kennedy Space Center at 4:50 p.m. EST Thursday to deliver a new module and critical supplies to the International Space Station.

The STS133 mission is delivering the Permanent Multipurpose Module (PMM), a facility created from the MultiPurpose Logistics Module named Leonardo. The module can support microgravity experiments in areas such as fluid physics, materials science, biology and biotechnology. Inside the PMM is Robonaut 2, a dextrous robot that will become a permanent resident of the station. Discovery also is carrying critical spare components to the space station and the Express Logistics Carrier 4, an external platform that holds large equipment.