Mercury - Mariner 10
Global mosaic of Mercury, incoming view
Mariner 10 mosaic of Mercury taken during the approach to the first
encounter. This mosaic was made of 18 pictures taken at 42 second
intervals 6 hours before closest approach. The lower two-thirds
of the visible portion is the southern hemisphere of Mercury. The
resolution is about 2 km. The flat-floored crater just below the
center of the frame, containing two smaller craters at its bottom
right and left, is the 160 km diameter Petrarch crater. The light-floored crater surrounded by darker material at the upper left is
Lermontov, with a diameter of160 km.
Mercury
Mercury: Geology
Impact Cratering