When Mariner 10 flew by Mercury in 1974, morning sunlight was just
striking Mozart crater so that most of the feature was hidden in darkness
near the terminator. During MESSENGER's Mercury flyby on January 14, 2008,
Mozart was in full sunlight, allowing the crater to be seen in detail for
the first time, as shown in this image snapped by the Narrow Angle Camera
(NAC) of the Mercury Dual Imaging System (MDIS). Named in honor of the
classical composer Wolfgang Amadeus Mozart, Mozart is the large crater
near the center of the image. The crater's diameter is about 225
kilometers (140 miles). The arc of dark hills visible on the crater's
floor probably represents remnants of a central peak ring, similar to
that shown in the January 30 image release (PIA10378). Clues to the origin
of the dark material on the peak ring and the curious dark streaks
radiating outward from the crater will be provided by 11-color image data
collected by the spacecraft's Wide Angle Camera (WAC). A close inspection
of the area around Mozart crater shows many long chains of secondary
craters, formed by impact of material thrown out during the formation of
the main crater. Mozart crater is located just south of the Caloris basin
and can be identified in the false color image previously released
(PIA10398). Members of the MESSENGER Science Team are currently studying
and characterizing the small craters on Mercury in order to provide new
insight into the cratering process as it operates on the different planets
in the Solar System.
Image Mission Elapsed Time (MET): 108830250
These images are from MESSENGER, a NASA Discovery mission to conduct the
first orbital study of the innermost planet, Mercury. For information
regarding the use of images, see the MESSENGER image use policy.
