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 San Pellegrino alla Sapienza San Pellegrino alla Sapienza o della Sapienza is a Gothic style, Roman Catholic church located at the intersection of via della Sapienza and via delle Terme in Siena, region of Tuscany, Italy. It is located across from the Teatro dei Rozzi. A parish church of San Pellegrino is documented at the site since 1050. A hospital, named Santa Maria della Misericordia, was founded on the site in 1240, and enlarged in 1320s by the Blessed Andrea Gallerani. The hospital was suppressed in 1408. Part of the hospital was assigned to the University of Siena, who erected