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Extensive Smooth Plains on Mercury
Jan. 12, 2010

Extensive Smooth Plains on Mercury
Jan. 12, 2010
Title : Extensive Smooth Plains on Mercury
Description : This NAC image is of an area just to the north of a previously released image acquired during MESSENGER's third flyby of Mercury. Both that previously released image and this one show large areas of Mercury's surface that appear to have been flooded by lava. In this view, craters are visible that have been nearly filled with lava, leaving only traces of their circular rims. MESSENGER images have revealed that the smooth plains in this region of Mercury's surface are quite extensive, and MESSENGER Science Team members are currently updating maps of the smooth plains created after the mission's second Mercury flyby to include these new views obtained from Mercury flyby 3. After the Mariner 10 mission, there was some controversy concerning the extent to which volcanism had modified Mercury's surface. Now MESSENGER results, including color composite images, evidence for pyroclastic eruptions, and images of vast lava plains (such as shown here) have demonstrated that Mercury was indeed volcanically active in the past.
Date : Jan. 12, 2010
Credit : NASA/Johns Hopkins University Applied Physics Laboratory/Carnegie Institution of Washington
Source : JHUAPL
File Type : JPG
File Size : 495KB


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