A close-up of the Mercury Laser Altimeter (MLA) profile of Mercury
acquired during MESSENGER's first Mercury flyby on January 14, 2008.
Comparison with an Arecibo radar image mosaic (bottom) provided by Harmon
and co-workers shows that the two largest depressions are adjacent impact
craters. The craters have rim-to-rim diameters of 107 km (left) and 122 km
(right). The root mean square roughness of the floor the larger crater is
~35 m. The vertical exaggeration in the figure is 35:1.
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.
