[decimon]

More pics here: http://www.nasa.gov/mission_pages/LRO/news/shrinking-moon.html

[SunkenCiv]

Thanks decimon.

...previous undetected landforms... called lobate scarps, are faults created when the Moon's once-molten interior began to cool, causing the lunar surface to contract and then crinkle... the contraction is recent, occurring less than a billion years ago, and is measured at about 100 metees (325 feet). Lobate scarps were first spotted near the lunar equator in the 1970s by panoramic cameras aboard the Apollo 15, 16 and 17 missions. Fourteen new faults have been been spotted in high-resolution images taken by NASA's Lunar Reconnaissance Orbiter.

"Steep thermal gradient" ping.

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