NASA - National Aeronautics and Space Administration

STS-119/Discovery
Target Launch Date: March 12

Kepler
Launch Date: No earlier than March 6
Launch Windows: 10:49 - 10:52 p.m.
and 11:13 - 11:16 p.m. EST

S6 Truss Segment
Aboard Discovery
Mission STS-119

On launch day, a space shuttle astronaut's first challenge isn't handling the force of liftoff or adjusting to microgravity -- it's getting dressed.

The astronauts of STS-126 acted as craftsmen, mechanics, spacewalkers and, of course, astronauts during International Space Station mission.

When a shuttle lands anywhere but Kennedy Space Center, it gets a piggyback ride back to its home base.

The Orbiting Carbon Observatory satellite is the first of its kind, built to measure and track carbon dioxide "sources" and "sinks" in Earth's atmosphere.