Eternal Light and Eternal Darkness on the Moon

The slope of the lunar axis is about 1.54 ° relative to the ecliptic plane. This creates unusual by earthly standards lighting conditions at its poles. The bottom of the deepest lunar polar craters is located in the zone of eternal shadow. At the same time, the highest parts of their shafts and some central peaks are almost always lit by the sun.
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As an example of such a "dualism" you can cite the photo below. It was made by the LRO. On it you can see part of the shaft of the Shackleton crater. This 21-kilometer shock formation is located almost exactly at the south pole of the moon. The depth of Shackleton is 4.2 km, its bottom is in the zone of eternal shadow. At the same time, three sites are located on the crater's shock shaft, which are illuminated by the Sun during more than 90% of the lunar winter.
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Such zones of eternal light can be of great interest to future explorers of the Moon. As is known, at the bottom of many eternally shaded lunar craters (including the Shackleton crater) there are large reserves of water ice.Many experts believe that the first human settlements on the moon will be built here. The zones of eternal light are the ideal place to house solar power plants that could generate energy for such settlements. It is possible that in the future these areas will become one of the most valuable lunar resources.

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