The "rang like a bell" misquote is from astronaut Charles Conrad's account of the Apollo 12 mission. This is from NASA's history site:Dick Winters said:
or... is it simply possible the moon is just a space rock trapped in earth's gravity? that the Mayans were simply misguided and uninformed in their religious convictions?
I can get on board with some of the questions/theories I've read on this thread... but hollow moons & Mayans quenching blood thirsts of giant fallen angels, this thread has literally gone off the deep end.
https://history.nasa.gov/SP-350/ch-12-3.html
The moon is not "hollow".Quote:
Meantime the experiments we had left on the lunar surface were busy recording and transmitting data. They all worked well, with one exception, and were really producing useful data. One unexpected result came from the seismic experiment recording the impact of Intrepid on the surface after we had jettisoned it. The entire Moon rang like a gong, vibrating and resonating for almost on hour after the impact. The best guess was that the Moon was composed of rubble a lot deeper below its surface than anybody had assumed. The internal structure, being fractured instead of a solid mass, could bounce the seismic energy from piece to piece for quite a while.
The same phenomenon was observed at two ALSEP stations when the Apollo 14 crew jettisoned their lunar module Antares and programmed it to crash between the Apollo 12 and 14 sites.
With every mission after Apollo 12, additional seismic calibrations were obtained by aiming the Saturn S-IVB stage to impact a selected point on the Moon after separation from the spacecraft. The seismic vibrations from these impacts lasted about three hours.
