The Aerial Regional-scale Environmental Survey (ARES) was a proposal by NASA's Langley Research Center to build a robotic, rocket-powered airplane that would fly one mile above the surface of Mars,[1] in order to investigate the atmosphere, surface, and sub-surface of the planet.[2][3][4] The ARES team, headed by Dr. Joel S. Levine,[5] sought to be selected and funded as a NASA Mars Scout Mission for a 2011 or 2013 launch window.[6] ARES was chosen as one of four finalists in the program, out of 25 potential programs.[7] However, the Phoenix mission was ultimately chosen instead.[8]
ARES would have traveled to Mars compactly folded into a protective aeroshell; upon entry in the thin atmosphere, the capsule would have deployed a parachute to decelerate, followed by ARES release at altitude.
As well as the aforementioned goals, the aircraft would also have investigated the atmosphere of Mars and its weak magnetic field.[9]