Tranquility Base
E563137
Tranquility Base is the historic site on the Moon where Apollo 11’s Lunar Module Eagle landed in 1969, marking the first crewed Moon landing.
All labels observed (1)
| Label | Occurrences |
|---|---|
| Tranquility Base canonical | 6 |
How this entity was disambiguated
This entity first appeared as the object of triple T6042819 — 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: Tranquility Base Context triple: [Mare Tranquillitatis, containsLandingSite, Tranquility Base]
-
A.
Taurus–Littrow valley
Taurus–Littrow valley is a geologically diverse lunar valley in the Moon’s Taurus Mountains that served as the landing and exploration site for NASA’s Apollo 17 mission.
-
B.
Launch Complex 19
Launch Complex 19 is a historic launch pad at Cape Canaveral used primarily for NASA’s Project Gemini crewed spaceflights in the 1960s.
-
C.
Clavius Base
Clavius Base is a production company associated with the film "That Thing You Do!" and other entertainment projects.
-
D.
Stevenson Landing
Stevenson Landing is a marina and docking facility on the Columbia River serving the city of Stevenson in Washington State.
-
E.
Launch Complex 18
Launch Complex 18 is a former U.S. launch facility at Cape Canaveral used primarily for early missile and space vehicle tests during the Cold War era.
- 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: Tranquility Base Target entity description: Tranquility Base is the historic site on the Moon where Apollo 11’s Lunar Module Eagle landed in 1969, marking the first crewed Moon landing.
-
A.
Taurus–Littrow valley
Taurus–Littrow valley is a geologically diverse lunar valley in the Moon’s Taurus Mountains that served as the landing and exploration site for NASA’s Apollo 17 mission.
-
B.
Launch Complex 19
Launch Complex 19 is a historic launch pad at Cape Canaveral used primarily for NASA’s Project Gemini crewed spaceflights in the 1960s.
-
C.
Clavius Base
Clavius Base is a production company associated with the film "That Thing You Do!" and other entertainment projects.
-
D.
Stevenson Landing
Stevenson Landing is a marina and docking facility on the Columbia River serving the city of Stevenson in Washington State.
-
E.
Launch Complex 18
Launch Complex 18 is a former U.S. launch facility at Cape Canaveral used primarily for early missile and space vehicle tests during the Cold War era.
- F. None of above. chosen
Statements (48)
| Predicate | Object |
|---|---|
| instanceOf |
historic site
ⓘ
lunar landing site ⓘ |
| associatedProgram | Apollo program ⓘ |
| associatedSpacecraft |
Apollo 11 Command Module Columbia
ⓘ
Apollo 11 Lunar Module Eagle ⓘ |
| containsArtifact |
Apollo 11 Lunar Module descent stage
ⓘ
linked to:
Apollo 11 Lunar Module Eagle
TV camera used for live broadcast ⓘ U.S. flag planted by Apollo 11 crew ⓘ commemorative plaque on Lunar Module descent stage ⓘ footprints of Apollo 11 astronauts ⓘ laser ranging retroreflector from Apollo 11 ⓘ seismometer from Apollo 11 Early Apollo Scientific Experiments Package ⓘ tools and equipment left on lunar surface ⓘ |
| coordinates | 0.67408° N, 23.47297° E ⓘ |
| countryOfOperator |
United States
ⓘ
linked to:
United States of America
|
| crewMemberInOrbit | Michael Collins ⓘ |
| crewMemberPresent |
Buzz Aldrin
ⓘ
Neil Armstrong ⓘ
linked to:
Neil A. Armstrong
|
| culturalSignificance | symbol of first human exploration of another celestial body ⓘ |
| EVACombinedDuration | about 2.5 hours ⓘ |
| featuredInBroadcast | first live television broadcast from lunar surface ⓘ |
| firstCrewedMoonLanding | true ⓘ |
| firstHumanLandingSiteOnMoon | true ⓘ |
| firstHumanOnSite |
Neil Armstrong
ⓘ
linked to:
Neil A. Armstrong
|
| governingBody | NASA ⓘ |
| heritageDesignationProposal | proposed UNESCO World Heritage–like protection (not formally applicable to Moon) ⓘ |
| landingCraft |
Apollo Lunar Module Eagle
ⓘ
linked to:
Apollo 11 Lunar Module Eagle
|
| landingDate | 1969-07-20 ⓘ |
| landingTimeUTC | 20:17:40 UTC ⓘ |
| latitude | 0.67408° N ⓘ |
| legalStatus | protected historic site (informal international recognition) ⓘ |
| locatedIn | Mare Tranquillitatis ⓘ |
| locatedOn | Moon ⓘ |
| longitude | 23.47297° E ⓘ |
| mission | Apollo 11 ⓘ |
| namedBy |
Neil Armstrong
ⓘ
linked to:
Neil A. Armstrong
|
| nameOrigin | derived from Mare Tranquillitatis (Sea of Tranquility) ⓘ |
| region | near lunar equator ⓘ |
| relatedEvent |
Buzz Aldrin’s lunar surface EVA
ⓘ
Neil Armstrong’s first step on the Moon ⓘ |
| relatedQuote | “Houston, Tranquility Base here. The Eagle has landed.” ⓘ |
| secondHumanOnSite | Buzz Aldrin ⓘ |
| selectionReason | smoothness and safety for landing ⓘ |
| surfaceEVAStartDate | 1969-07-21 ⓘ |
| surfaceEVAStartTimeUTC | 02:56 UTC ⓘ |
| surfaceStayDuration | about 21 hours ⓘ |
| symbolizes | technological achievement of the Space Race era ⓘ |
| terrainType | relatively flat basaltic plain ⓘ |
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: Tranquility Base Description of subject: Tranquility Base is the historic site on the Moon where Apollo 11’s Lunar Module Eagle landed in 1969, marking the first crewed Moon landing.
Referenced by (6)
Full triples — surface form annotated when it differs from this entity's canonical label.