LROC Wide Angle Camera mosaic of Menelaus crater at the boundary between Mare Serenitatis and the highlands (dotted line). Broad ejecta rays extend along the mare-highlands boundary and also in the NE-SW direction. In this image, the ejecta ray extending to the SW is easier to distinguish than the ray extending into Mare Serenitatis. The arrow marks the location of a recent 350 meter (1148 feet) diameter impact near the rim of Menelaus crater.

NASA's Goddard Space Flight Center built and manages the mission for the Exploration Systems Mission Directorate at NASA Headquarters in Washington. The Lunar Reconnaissance Orbiter Camera was designed to acquire data for landing site certification and to conduct polar illumination studies and global mapping. Operated by Arizona State University, LROC consists of a pair of narrow-angle cameras (NAC) and a single wide-angle camera (WAC). The mission is expected to return over 70 terabytes of image data.