WASHINGTON, Feb. 13 (TNSjou) -- The Smithsonian Institution National Air and Space Museum issued the following news release:

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Smithsonian Planetary Scientists Discover Recent Tectonic Activity on the Moon

New Map of Small Ridges in the Lunar Maria Reveals New Seismic Threats to Human Exploration

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Scientists have produced the first global map and analysis of small mare ridges (SMRs) on the moon, a characteristic geological fea . . .

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