the main point seems to have been the precision with which they could land within a small region, and they did nail that. fta: While most previous probes have

the main point seems to have been the precision with which they could land within a small region, and they did nail that. fta: While most previous probes have used landing zones about 10 kilometers (six miles) wide, SLIM was aiming at a target of just 100 meters (330 feet). Improved accuracy would give scientists access to more of the moon, since probes could be placed nearer to obstacles.