NASA's Orion Spacecraft. Deep space capability is already being worked on with an unmanned test scheduled this year.
Quote:In the future, Orion will launch on NASA’s new heavy-lift rocket, the Space Launch System. More powerful than any rocket ever built, SLS will be capable of sending humans to deep space destinations such as an asteroid and eventually Mars. Exploration Mission-1, scheduled for 2017, will be the first mission to integrate Orion and the Space Launch System.http://www.nasa.gov/exploration/systems/...5sXG5RdU40