Radio Aurora Explorer, a National Science Foundation 3U Cubesat, built by the University of Michigan, to study the aurora by picking up ground-based radar signals. Launched 2010 - 2011. Cubesat 3U). Launched 2010-2011.
First Launch: 2010-11-20. Last Launch: 2011-10-28. Number: 2 . Gross mass: 3.00 kg (6.60 lb).