ocr: ALSEP: Scientific Station on the Moon Although the Apollo astronauts could stay on the lunar surface only a few days, scientists wished to make some kinds of ervations over a period of weeks or even years, if possible. solution was to have the astronauts set up an unmanned, omatic scientific station called ALSEP (Apollo Lunar Surface eriments Package). An ALSEP was emplaced at each landing beginning with Apollo 12. n ALSEP is a group of geophysical instruments arrayed about entral station, as in the accompanying sketch. Each ALSEP a different set of experiments. Power is supplied by a Radio- p ...