Passive Seismic Experiment
E824741
The Passive Seismic Experiment was an Apollo-era scientific investigation that used seismometers placed on the Moon’s surface to detect moonquakes and meteoroid impacts, revealing the Moon’s internal structure.
All labels observed (1)
| Label | Occurrences |
|---|---|
| Passive Seismic Experiment canonical | 2 |
How this entity was disambiguated
This entity first appeared as the object of triple T9837521 — resolving that mention is where its identity was fixed. The disambiguator weighed these candidate entities and picked the highlighted one (or “None”, minting a new entity). This is how homonymy is resolved: the same surface form can point to different entities.
NED1
Entity disambiguation (via context triple)
gpt-5-mini-2025-08-07
Target entity: Passive Seismic Experiment Context triple: [Lunar Seismic Profiling Experiment, relatedTo, Passive Seismic Experiment]
-
A.
GEOSCOPE global seismological network
The GEOSCOPE global seismological network is a worldwide array of high-quality seismic stations that records and monitors earthquakes and Earth’s internal structure for geophysical research.
-
B.
Lunar Seismic Profiling Experiment
The Lunar Seismic Profiling Experiment was a geophysical investigation deployed during Apollo 17 to study the Moon’s shallow subsurface structure by recording seismic waves from controlled explosive charges.
-
C.
Seismological Laboratory at Caltech
The Seismological Laboratory at Caltech is a world-renowned research center for earthquake science and seismology, known for pioneering work in measuring and understanding seismic activity.
-
D.
Elementary Seismology
"Elementary Seismology" is a foundational textbook on the principles and methods of studying earthquakes and seismic waves, authored by pioneering seismologist Charles Francis Richter.
-
E.
California Integrated Seismic Network
The California Integrated Seismic Network is a collaborative statewide system that monitors, records, and reports earthquake activity in California to support research and public safety.
- F. None of above. chosen
- G. Unsure - the case is ambiguous/there is not enough information to decide.
NED2
Entity disambiguation (via description)
gpt-5-mini-2025-08-07
Target entity: Passive Seismic Experiment Target entity description: The Passive Seismic Experiment was an Apollo-era scientific investigation that used seismometers placed on the Moon’s surface to detect moonquakes and meteoroid impacts, revealing the Moon’s internal structure.
-
A.
GEOSCOPE global seismological network
The GEOSCOPE global seismological network is a worldwide array of high-quality seismic stations that records and monitors earthquakes and Earth’s internal structure for geophysical research.
-
B.
Lunar Seismic Profiling Experiment
The Lunar Seismic Profiling Experiment was a geophysical investigation deployed during Apollo 17 to study the Moon’s shallow subsurface structure by recording seismic waves from controlled explosive charges.
-
C.
Seismological Laboratory at Caltech
The Seismological Laboratory at Caltech is a world-renowned research center for earthquake science and seismology, known for pioneering work in measuring and understanding seismic activity.
-
D.
Elementary Seismology
"Elementary Seismology" is a foundational textbook on the principles and methods of studying earthquakes and seismic waves, authored by pioneering seismologist Charles Francis Richter.
-
E.
California Integrated Seismic Network
The California Integrated Seismic Network is a collaborative statewide system that monitors, records, and reports earthquake activity in California to support research and public safety.
- F. None of above. chosen
Statements (47)
| Predicate | Object |
|---|---|
| instanceOf |
Apollo experiment
ⓘ
geophysics experiment ⓘ lunar seismic experiment ⓘ |
| abbreviation | PSE ⓘ |
| contributedTo |
impact cratering studies
ⓘ
model of lunar interior ⓘ understanding of lunar tectonics ⓘ |
| dataTransmission | radio link to Earth ⓘ |
| dataType | seismic data ⓘ |
| dataUsedBy |
geophysicists
ⓘ
lunar scientists ⓘ |
| deployedOnMission |
Apollo 11
ⓘ
Apollo 12 ⓘ Apollo 14 ⓘ Apollo 15 ⓘ |
| deploymentSite |
Fra Mauro
ⓘ
Hadley–Apennine ⓘ
linked to:
Hadley–Apennine region
Ocean of Storms ⓘ Tranquility Base ⓘ |
| detectedPhenomenon |
deep moonquakes
ⓘ
meteoroid impacts ⓘ shallow moonquakes ⓘ thermal moonquakes ⓘ |
| endDate | 1970s ⓘ |
| environment | lunar surface vacuum ⓘ |
| era | Apollo program ⓘ |
| helpedDetermine |
evidence for lunar core
ⓘ
lunar crust thickness ⓘ lunar mantle properties ⓘ |
| location | near lunar equator ⓘ |
| method | passive seismology ⓘ |
| operatedBy |
Apollo astronauts
ⓘ
NASA ⓘ |
| operatedOn | Moon ⓘ |
| operationalMode | continuous monitoring ⓘ |
| partOf | Apollo Lunar Surface Experiments Package ⓘ |
| powerSource |
radioisotope thermoelectric generator
ⓘ
solar panels ⓘ |
| purpose |
detect meteoroid impacts
ⓘ
detect moonquakes ⓘ study lunar internal structure ⓘ |
| scientificDiscipline |
geophysics
ⓘ
planetary science ⓘ seismology ⓘ |
| sensitivityTo | ground motion on Moon ⓘ |
| startDate | 1969 ⓘ |
| usedInstrument | seismometer ⓘ |
How these facts were elicited
The pipeline generated the facts above by prompting gpt-5.1 with this entity's name + description and the instruction below.
Instruction
You are a knowledge base construction expert. Given a subject entity and a description of it, return factual statements that you know for the subject as a JSON list of dictionaries(triples), where keys must be "subject", "predicate" and "object". The number of facts may be very high, between 25 to 50 or more, for very popular subjects. For less popular subjects, the number of facts can be very low, like 5 or 10. # Requirements - If you don't know the subject at all, return an empty list. - If the subject is not a named entity, return an empty list. - Include at least one triple where predicate is "instanceOf". - Do not get too wordy. - Separate several objects into multiple triples with one object.
Input
Subject: Passive Seismic Experiment Description of subject: The Passive Seismic Experiment was an Apollo-era scientific investigation that used seismometers placed on the Moon’s surface to detect moonquakes and meteoroid impacts, revealing the Moon’s internal structure.
Referenced by (2)
Full triples — surface form annotated when it differs from this entity's canonical label.