In Summer 2009 the Agenzia Spaziale Italiana (ASI) launched a stratospheric balloon from Svalbard to test the data and performance of the subsurface penetrating radars SHARAD. The experiment was named SORA, SOunding RAdar. SHARAD is a radar currently on board the NASA spacecraft Mars Reconnaissance Orbiter. The radar has subsurface penetrating capabilities and it provides high-resolution data of the subsurface geology. SHARAD is coupled by MARSIS, another ASI radar, which is on board of the European mission Mars Express. The SORA Experiment launched a model of the radar over Greenland at 35,000 km of altitude.