What did Apollo 12 accomplish?

Answer 1

Among other things, Apollo 12 proved that a pinpoint landing was possible (Apollo 11 missed their landing point because the field was strewn with boulders that had not been seen in photographs, requiring Commander Armstrong to take manual control of the LM and navigate to a clear landing zone). As part of their pinpoint landing, they were able to retrieve a camera that had been sent up years earlier aboard the Surveyor 2 probe and return it to Earth. Examination of that camera led to a better understanding of what happens to equipment exposed to unfiltered solar radiation over a period of years.

Answer 2

Apollo 12 was the second mission to land astronauts on the Moon. The mission successfully landed astronauts Charles Conrad and Alan Bean on the lunar surface, where they conducted experiments and explored the landing site. They also recovered important samples of lunar rocks and soil for scientific study.