Orion was originally designed for extended lunar missions. There were studies that envisioned it as a component of asteroid missions. Probably there are studies

Orion was originally designed for extended lunar missions. There were studies that envisioned it as a component of asteroid missions. Probably there are studies applying it to Mars, but I'm not aware of those. http://www.universetoday.com/88434/human-mission-to-an-asteroid-the-orion-mpcv/ http://www.universetoday.com/88434/human-mission-to-an-aster...