text:  NASA has named the rim of Shackleton as a potential candidate for its lunar outpost , slated to be up and running by 2020 and continuously staffed by a crew by 2024 . The location would promote self @-@ sustainability for lunar residents , as perpetual sunlight on the south pole would provide energy for solar panels . Furthermore , the shadowed polar regions are believed to contain the frozen water necessary for human consumption and could also be harvested for fuel manufacture . 
  