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
La Sierra University school section split to form La Sierra College Preparatory School. The preparatory school is now named La Sierra Academy and is still located near the university. It was first accredited as a four-year liberal arts college in 1946. In 1964 the city of Riverside annexed much of La Sierra lands and nearby Arlington, placing the college within Riverside's city limits. In 1967, the college merged with Loma Linda University, becoming Loma Linda University's College of Arts and Sciences. During this time, La Sierra's School of Education, School of Business and Management, and its Division of Continuing Studies were founded. In