Please end space experiments on monkeys, and let them live out the rest of their lives at a sanctuary instead. Animals aren't astronauts and, unlike human volunteers, cannot give their consent to being the subject of experiments or risking their lives on a mission into the unknown. These intelligent, sensitive primates would suffer immensely during the years of stressful tests and training--as well as during any potential mission into outer space. Other pioneering space agencies use high-tech 21st-century technology, rather than conducting archaic experiments on primates. We urge you to do the same.