Why is the Moon shrinking? Scientists say future NASA missions must study 'Moonquakes'
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yesterday, claims that the moon has gotten 150 ft. skinnier over the last several hundred million years. The researchers identified the epicenters for 28 moonquakes recorded from 1969 to 1977 using data from seismic sensors left on the moon by NASA's Apollo missions in the 1960s and 1970s.Moonquakes could be caused by asteroid impacts or rumblings deep within the moon's interior, but the researchers found that at least eight of the moonquakes probably resulted from tectonic plates moving along the thrust faults or fault scarps.
There’s a bit of gap in the data , but the researchers suggest that the moon is probably still experiencing quakes now."We found that a number of the quakes recorded in the Apollo data happened very close to the faults seen in the LRO imagery," said Nicholas Schmerr, an assistant professor of geology at the University of Maryland, noting that the LRO imagery also shows physical evidence of geologically recent fault movement, such as landslides and tumbled boulders.
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