The Mighty Eagle (also known as the Ethan Chapman) was a prototype robotic lander developed by NASA at the Marshall Space Flight Center in Huntsville, Alabama.

These sensors and algorithms include such things as onboard cameras that, with specialized guidance, navigation and control software, could aid in the capture of orbiting space debris, in-space docking with a fuel depot, docking of a robotic lander with an orbiting command module and the rendezvous of multiple unmanned stages for deep space human exploration of the Solar System.

[2] Initial software and hardware development were done on precursor vehicle called the Cold Gas Test Article which used compressed air as a propellant and had about 10 seconds of flight time.

[3] The Mighty Eagle prototype lander was developed by the Marshall Center and Johns Hopkins University Applied Physics Laboratory.

[4][5] In July 2013 a hazard field (test area for the lander) consisting of 200 tons of lunar simulant began construction at the Marshall Space Flight Center.