Lunar seismology
seismology
Lunar seismology is the study of ground motions of the Moon and the events, typically impacts or moonquakes, that excite them.
History
Several seismographic measuring systems have already been installed on the Moon and their data made available to scientists (such as those from the Apollo Lunar Surface Experiments Package).
The existence of moonquakes was an unexpected discovery from seismometers placed on the Moon by Apollo astronauts from 1969 through 1972. The Apollo 11 instrument functioned through August of the landing year. The instruments placed by the Apollo 12, 14, 15, and 16 missions were functional until they were switched off in 1977. Moonquakes are not believed to be caused by tectonic plate movement (as earthquakes are), but by tidal forces between Earth and the Moon. Further data is needed to clarify the origins and effects of the forces causing moonquakes.
The Chandrayaan-3 mission by Indian Space Research Organisation had a payload ILSA (Instrument for Lunar Seismic Activity), to acquire data about moonquakes. It detected a presumed natural event on 26 August, 2023. It is suspected to be a moonquake.
“Lunar seismology” enters the record as seismology. Crown Archives preserves that source wording while asking what Lunar and seismology can confirm, complicate or overturn.
Why this record matters
“Lunar seismology” is worth following because a concise public description often conceals a longer documentary argument. Here, Lunar and seismology provides the most credible route into that argument.
Named sources, stable identifiers and responsible institutions provide the strongest route from overview to verifiable evidence. The source revision retrieved here is dated Jun 29, 2026. The linked authority identifier is Q6703832. None of the 0 selected statements returned an explicit reference. The first chronological checks are 1969, 1972, 1977 and 2023.
The absence of detail may reflect summary conventions rather than a lack of surviving documentation. The lead is largely declarative, so disagreement and counter-evidence require a deliberate search beyond the opening account. Authority statements aid reconciliation but still require their own references, qualifiers and ranks to be checked.
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This entry incorporates text from “Lunar seismology” on English Wikipedia. Contributors are listed in the page history. Text is available under the Creative Commons Attribution-ShareAlike 4.0 License. Selected authority identifiers and statements are retrieved from Wikidata under CC0; their references and qualifiers remain part of the verification path.