ALSEP (Apollo Lunar Surface Experiments Package)

E239138

Apollo program experiment lunar scientific instrument package space experiment

The Apollo Lunar Surface Experiments Package (ALSEP) was a suite of scientific instruments deployed by Apollo astronauts on the Moon to conduct long-term studies of the lunar environment, interior, and surface processes.

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All labels observed (7)

Label	Occurrences
Apollo Lunar Surface Experiments Package	7
ALSEP (Apollo Lunar Surface Experiments Package) canonical	2
Apollo Lunar Surface Experiments Package (ALSEP)	1
Apollo Lunar Surface Experiments Package power system	1
Lunar Ejecta and Meteorites Experiment	1
Lunar Ejecta and Meteorites experiment	1
Lunar Surface Gravimeter	1

How this entity was disambiguated

This entity first appeared as the object of triple T2169255 — 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: ALSEP (Apollo Lunar Surface Experiments Package)
Context triple: [Apollo 17, notableExperiment, ALSEP (Apollo Lunar Surface Experiments Package)]

A. Earth Resources Experiment Package
The Earth Resources Experiment Package was a suite of remote-sensing instruments flown on NASA’s Skylab space station to study Earth’s land, oceans, and atmosphere for resource and environmental monitoring.
B. SLIM lunar lander
The SLIM lunar lander is a Japanese spacecraft designed by JAXA to demonstrate high-precision, lightweight landing technology on the Moon’s surface.
C. S-IVB
The S-IVB was the single-engine upper stage of NASA’s Saturn launch vehicles, used to place Apollo spacecraft into Earth orbit and send them toward the Moon.
D. DSX (Demonstration and Science Experiments) spacecraft
The DSX (Demonstration and Science Experiments) spacecraft is a U.S. Air Force Research Laboratory mission designed to study the effects of the space environment on spacecraft components and technologies in medium Earth orbit.
E. Apollo Lunar Module
The Apollo Lunar Module was the two-stage spacecraft used by NASA during the Apollo missions to land astronauts on the Moon and return them to lunar orbit.
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: ALSEP (Apollo Lunar Surface Experiments Package)
Target entity description: The Apollo Lunar Surface Experiments Package (ALSEP) was a suite of scientific instruments deployed by Apollo astronauts on the Moon to conduct long-term studies of the lunar environment, interior, and surface processes.

A. Earth Resources Experiment Package
The Earth Resources Experiment Package was a suite of remote-sensing instruments flown on NASA’s Skylab space station to study Earth’s land, oceans, and atmosphere for resource and environmental monitoring.
B. SLIM lunar lander
The SLIM lunar lander is a Japanese spacecraft designed by JAXA to demonstrate high-precision, lightweight landing technology on the Moon’s surface.
C. S-IVB
The S-IVB was the single-engine upper stage of NASA’s Saturn launch vehicles, used to place Apollo spacecraft into Earth orbit and send them toward the Moon.
D. DSX (Demonstration and Science Experiments) spacecraft
The DSX (Demonstration and Science Experiments) spacecraft is a U.S. Air Force Research Laboratory mission designed to study the effects of the space environment on spacecraft components and technologies in medium Earth orbit.
E. Apollo Lunar Module
The Apollo Lunar Module was the two-stage spacecraft used by NASA during the Apollo missions to land astronauts on the Moon and return them to lunar orbit.
F. None of above. chosen

Statements (47)

Predicate	Object
instanceOf	Apollo program experiment ⓘ lunar scientific instrument package ⓘ space experiment ⓘ
abbreviationOf	ALSEP (Apollo Lunar Surface Experiments Package) self-linksurface differs ⓘ surface form: Apollo Lunar Surface Experiments Package
contains	central station ⓘ charged particle detector ⓘ heat flow experiment ⓘ lunar surface magnetometer ⓘ seismometer ⓘ solar wind experiment ⓘ
contributedTo	characterization of the lunar magnetic field ⓘ evidence that the Moon is seismically active ⓘ knowledge of solar wind composition at 1 AU ⓘ models of the Moon’s internal structure ⓘ understanding of the Moon’s thermal evolution ⓘ
countryOfOperator	United States of America ⓘ surface form: United States
dataTransmission	telemetry to Earth ⓘ
dataUsedFor	understanding lunar heat flow ⓘ understanding lunar magnetic field ⓘ understanding lunar seismic activity ⓘ understanding solar wind interaction with the Moon ⓘ
deployedBy	Apollo astronauts ⓘ
deployedOn	Moon ⓘ
deploymentContext	post-landing surface operations of Apollo missions ⓘ
deploymentMethod	manually deployed by astronauts during Apollo EVAs ⓘ
designedFor	long-term operation on the lunar surface ⓘ
environment	airless, low-gravity lunar surface ⓘ
fullName	ALSEP (Apollo Lunar Surface Experiments Package) self-linksurface differs ⓘ surface form: Apollo Lunar Surface Experiments Package
locationType	fixed station on lunar surface ⓘ
observes	lunar magnetic anomalies ⓘ lunar seismic events ⓘ lunar thermal properties ⓘ solar wind particles at the Moon ⓘ
operatedOn	lunar surface ⓘ
operationalEnvironment	extreme temperature variations on the Moon ⓘ
poweredBy	radioisotope thermoelectric generator ⓘ
program	Apollo program ⓘ
purpose	to conduct long-term scientific studies on the Moon ⓘ
requires	astronaut setup and alignment on the lunar surface ⓘ
scientificDiscipline	geophysics ⓘ planetary science ⓘ space physics ⓘ
spaceAgency	NASA ⓘ
studies	lunar environment ⓘ lunar interior ⓘ lunar surface processes ⓘ
temporalScope	long-duration measurements over months to years ⓘ

How these facts were elicited

Referenced by (14)

Full triples — surface form annotated when it differs from this entity's canonical label.

Apollo 17 → notableExperiment → ALSEP (Apollo Lunar Surface Experiments Package) ⓘ

this entity surface form: Lunar Ejecta and Meteorites Experiment

Apollo 15 → carriedInstrument → ALSEP (Apollo Lunar Surface Experiments Package) ⓘ

Apollo 16 → scientificInstrumentsDeployed → ALSEP (Apollo Lunar Surface Experiments Package) ⓘ

this entity surface form: Apollo Lunar Surface Experiments Package (ALSEP)

Apollo 14 → lunarExperimentsDeployed → ALSEP (Apollo Lunar Surface Experiments Package) ⓘ