Lack of Exposed Ice Inside Lunar South Pole Shackleton Crater

@article{Haruyama2008LackOE,
  title={Lack of Exposed Ice Inside Lunar South Pole Shackleton Crater},
  author={Jun'ichi Haruyama and Makiko Ohtake and Tsuneo Matsunaga and Tomokatsu Morota and Chikatoshi Honda and Yasuhiro Yokota and Carle M. Pieters and Seiichi Hara and Kazuyuki Hioki and Kazuto Saiki and Hideaki Miyamoto and Akira Iwasaki and Masanao Abe and Yoshiko Ogawa and Hiroshi. Takeda and Motomaro Shirao and Atsushi Yamaji and J-L. Josset},
  journal={Science},
  year={2008},
  volume={322},
  pages={938 - 939}
}
The inside of Shackleton Crater at the lunar south pole is permanently shadowed; it has been inferred to hold water-ice deposits. The Terrain Camera (TC), a 10-meter-resolution stereo camera onboard the Selenological and Engineering Explorer (SELENE) spacecraft, succeeded in imaging the inside of the crater, which was faintly lit by sunlight scattered from the upper inner wall near the rim. The estimated temperature of the crater floor, based on the crater shape model derived from the TC data… 
An explanation of bright areas inside Shackleton Crater at the Lunar South Pole other than water‐ice deposits
Whether water molecules of cometary and/or solar wind origin migrated to and accumulated in cold permanently shadowed areas at the lunar poles has long been debated from the perspective of scientific
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An upper limit for ice in Shackleton crater as revealed by LRO Mini‐RF orbital radar
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The age of lunar south circumpolar craters
The interiors of the lunar south circumpolar craters Haworth, Shoemaker, Faustini, and Shackleton contain permanently shadowed regions (PSRs) and have been interpreted to contain sequestered
Effects of orbital evolution on lunar ice stability
[1] Many regions near the lunar poles are currently cold enough that surface water ice would be stable against sublimation losses for billions of years. However, most of these environments are
Using Boulder Tracks as a Tool to Understand the Bearing Capacity of Permanently Shadowed Regions of the Moon
Permanently shadowed regions (PSRs) are abundant at the lunar poles. They experience no direct sunlight and reach temperatures as low as 30 K. PSRs are of interest as evidence suggests that some may
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TLDR
New 20-m resolution, 13-cm-wavelength radar images are presented that show no evidence for concentrated deposits of water ice in Shackleton crater or elsewhere at the Moon's south pole, consistent with the ice being present only as disseminated grains in the lunar regolith.
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