MERCURIAL. A bluish tinge reveals the presence of youthful craters, no more than 500 million years old, on Mercury (top). MESSENGER's global view of Mercury (middle) includes the giant impact crater Caloris (circle). Taken from a distance of 33,000 km, a view of Mercury looking toward the planet's south pole (bottom left) has never been previously seen by a spacecraft. One of the highest and longest cliffs ever seen on the planet is visible in the curving structure running from the top to left edge of the image at bottom right.
Credit: NASA/JHU APL/Carnegie Institution
Found in: Planetary Science
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