dinnerstein that things are still up there today which means you can measure earth moon motion very accurately we know from these measurements that the moon is moving away from earth. with the 2nd main landing the pace of research picked up. from that point on the astronauts set up a whole package of geophysical measuring equipment that's there for a lunar landing site. some were able to transmit data to earth for up to 4 years of course everything didn't always go to plan. bulky space suits could make research awkward at times nevertheless the yield in scientific terms was impressive. in real time researches could recall seismic waves created by astronauts as they detonated small controlled explosions that sent by professionals through lunar soil and rock. they wanted to examine the structure of the main other instruments revealed naturally occurring quakes that were different from those on earth moon quakes at the time this was a big surprise in april 972 the astronauts on the apollo 16 mission became astronomers using a special camera they took photographs of the earth and very hot stars fo