this phenomenon arises due to so-called syncrude has rotation. the moon needs exactly the same time to orbit the earth as it does to rotate on its own axis almost 28 days since it rotates on its own axis this means that the side with the solar cell faces the sun for 14 days during this period the energy production by the solar cell is constantly stable for the other 2 weeks the solar cell is on the shadow side solar energy cannot be produced during the long lunar night. and that night it's cold dark there's no solar energy to draw from you have to have power that can keep alive during those 14 days so we need small efficient batteries we need very efficient solar cells if we can develop batteries that will have 2 weeks for. it do all of the things you want to do. during that time then that's the answer. for duke's 3 day trip to the moon and the other equally short apollo missions energy was not a problem a much greater challenge back then was moving around in the bulky space suits the astronauts only learned to handle it whence they breached the