Yes, and I assume you would have got further than the first paragraph.
The Moon rang like a bell
Between 1972 and 1977, seismometers installed on the Moon by the Apollo missions recorded moonquakes. The Moon was described as "ringing like a bell" during some of those quakes, specifically the shallow ones.[16] This phrase was brought to popular attention in March 1970,[1] in an article in Popular Science.[17] When Apollo 12 deliberately crashed the Ascent Stage of its Lunar Module onto the Moon's surface, it was claimed that the Moon rang like a bell for an hour, leading to arguments that it must be hollow like a bell.[1] Lunar seismology experiments since then have shown that the lunar body has shallow moonquakes that act differently from quakes on Earth, due to differences in texture, type and density of the planetary strata, but there is no evidence of any large empty space inside the body.[16]
Yes, and I assume you would have got further than the first paragraph.
Last sentence.