Moon is gradually shrinking, causing moonquakes

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There may be a crater but due to the image scale if there is one, it is too small to be seen; the LROC site explanation described it more as a "gouge rather than crater...."

As the moon shrinks, it gets wrinkled, which then forms "thrust faults" and results in one section of the surface crust pushing up over another crust. Now, researchers have found evidence that active faults on the crust of the moon caused the shakes.

The pushed-up crusts typically measure tens of meters high and extend for a few miles, NASA said. Four of the seismometers operated from 1969 to 1977 and recorded 28 shallow moonquakes.

NASA scientists and astronauts say that moonquakes - some with magnitudes as high as five on the Richter scale - may be caused by the moon shrinking as its interior cools. They also used an algorithm in order to detect the locations.

A new study published in the journal Nature Geoscience analyzed data from the Apollo missions decades ago to shed more light on the geologic activities of Earth's closest neighbor. This is significant enough to attribute the quakes to the faults. They calculated at what distance from the fault scarp the shaking would be strongest, and compared this distance to the re-calculated epicentres. She happens to be the goddess of the moon. The apogee is the point that is farthest from the Earth in its orbit.

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While our planet earth is already in a disastrous state with the drastic change in climate, our satellite moon is also going through some fractures. Additionally, while other events, such as meteoroid impacts, can produce quakes, they produce a different seismic signature than quakes made by fault slip events. Watters is a senior scientist in the Centre for Earth and Planetary Studies at the Smithsonian's National Air and Space Museum in Washington.

Bridenstine noted that Vice President Mike Pence is now challenging the US space agency to expedite its Moon initiatives and put astronauts back on the lunar surface in the next five years.

Moonquakes are also corroborated from the highly detailed images of the Moon taken by NASA's Lunar Reconnaissance Orbiter (LRO) mission.

The budget increase is on top of the initial $21 billion budget request from NASA to accelerate the return to the lunar surface. The bright patches have been exposed to this radiation only recently hence the existence of boulders and landslides is evidence of recent moonquakes. They built shake maps to show what forces would be experienced during moonquakes along these faults. The north and south Massif are the Lunar Mountains that make the lunar valley named Taurus-Littrow. The valley was explored in 1972 by the Apollo 17 mission astronauts Eugene Cernan and Harrison Schmitt.

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