Exploration at NASA

At the core of NASA's future space exploration is a return to the moon, where we will build a sustainable long term human presence.

As the space shuttle approaches retirement and the International Space Station nears completion, NASA is building the next fleet of vehicles to bring astronauts back to the moon, and possibly to Mars and beyond.

http://www.nasa.gov/externalflash/CxEMM_SITE/index.html
Project:Constellation