MARSIS MARSIS MARSIS (Mars Advanced Radar for Subsurface and Ionosphere Sounding) is a low frequency, pulse-limited radar sounder and altimeter developed by the University of Rome La Sapienza and Alenia Spazio (today Thales Alenia Space Italy). The Italian MARSIS instrument is operational on the European Space Agency, "Mars Express" orbiter mission. The MARSIS Principal Investigator is Giovanni Picardi from the University of Rome "La Sapienza", Italy. It features ground-penetrating radar capabilities, which uses synthetic aperture techniques and a secondary receiving antenna to isolate subsurface reflections. MARSIS identified buried basins on Mars. MARSIS was funded by ASI (Italy) and NASA (USA). On
San Pellegrino alla Sapienza the school of Simone Martini, a "St Peter and Paul" by Bartolomeo Bulgarini, and a 14th-century ivory tryptich and icon of the "Madonna di Monteguaitano", originally from the church of Maria Santissima del Rosario. Other frescoes in the church were painted by Giuliano Traballesi; canvases were present in 1840 by Lorenzo Feliciati and Jacopo Calvi, with statues by Giuseppe Mazzuoli. Underneath the church was the Oratory of the Beato Andrea Gallerrani, containing paintings by Salimbeni and Casolani. San Pellegrino alla Sapienza San Pellegrino alla Sapienza o della Sapienza is a Gothic style, Roman Catholic church located at the intersection of