Explorer 12
E1038034
Explorer 12 was an early 1961 NASA scientific satellite that studied Earth’s radiation belts and interplanetary space as part of the Explorer program.
All labels observed (1)
| Label | Occurrences |
|---|---|
| Explorer 12 canonical | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T13288264 — 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: Explorer 12 Context triple: [NASA Explorer Program, notableMission, Explorer 12]
-
A.
Explorer 10
Explorer 10 was an early NASA scientific satellite launched in 1961 to study Earth’s magnetic field and the solar wind in near-Earth space.
-
B.
Explorer 6
Explorer 6 was an early NASA Earth-orbiting satellite launched in 1959 that returned some of the first images of Earth from space and studied the planet’s radiation environment.
-
C.
Explorer 71
Explorer 71 is a NASA Explorer-series scientific satellite better known as the Advanced Composition Explorer (ACE), designed to study energetic particles from the Sun, the interplanetary medium, and galactic sources.
-
D.
Explorer 1
Explorer 1 was the first successful United States satellite, launched in 1958 and notable for discovering the Van Allen radiation belts.
-
E.
Explorer 66
Explorer 66, better known as the Cosmic Background Explorer (COBE), is a NASA satellite launched in 1989 that made landmark measurements of the cosmic microwave background radiation, providing key evidence for the Big Bang theory.
- 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: Explorer 12 Target entity description: Explorer 12 was an early 1961 NASA scientific satellite that studied Earth’s radiation belts and interplanetary space as part of the Explorer program.
-
A.
Explorer 10
Explorer 10 was an early NASA scientific satellite launched in 1961 to study Earth’s magnetic field and the solar wind in near-Earth space.
-
B.
Explorer 6
Explorer 6 was an early NASA Earth-orbiting satellite launched in 1959 that returned some of the first images of Earth from space and studied the planet’s radiation environment.
-
C.
Explorer 71
Explorer 71 is a NASA Explorer-series scientific satellite better known as the Advanced Composition Explorer (ACE), designed to study energetic particles from the Sun, the interplanetary medium, and galactic sources.
-
D.
Explorer 1
Explorer 1 was the first successful United States satellite, launched in 1958 and notable for discovering the Van Allen radiation belts.
-
E.
Explorer 66
Explorer 66, better known as the Cosmic Background Explorer (COBE), is a NASA satellite launched in 1989 that made landmark measurements of the cosmic microwave background radiation, providing key evidence for the Big Bang theory.
- F. None of above. chosen
Statements (39)
| Predicate | Object |
|---|---|
| instanceOf |
Explorer program satellite
ⓘ
NASA spacecraft ⓘ artificial satellite ⓘ scientific satellite ⓘ |
| contributedTo |
early interplanetary space measurements
ⓘ
understanding of Earth’s radiation environment ⓘ |
| countryOfOperator |
United States of America
ⓘ
surface form:
United States
|
| epoch | early Space Age ⓘ |
| era | Cold War ⓘ |
| followedBy | Explorer 14 NERFINISHED ⓘ |
| launchCountry |
United States of America
ⓘ
surface form:
United States
|
| launchDate | 1961-08-16 ⓘ |
| launchSite |
Cape Canaveral Air Force Station
NERFINISHED
ⓘ
Cape Canaveral, Florida NERFINISHED ⓘ |
| launchVehicle | Thor-Delta NERFINISHED ⓘ |
| launchYear | 1961 ⓘ |
| missionType |
interplanetary space study
ⓘ
radiation belt study ⓘ scientific research ⓘ space physics ⓘ |
| natureOfOrbit | Earth orbit ⓘ |
| operator | NASA ⓘ |
| partOf | United States space program NERFINISHED ⓘ |
| precededBy | Explorer 11 NERFINISHED ⓘ |
| primaryBody | Earth NERFINISHED ⓘ |
| program | Explorer program NERFINISHED ⓘ |
| purpose |
study Earth’s radiation belts
ⓘ
study interplanetary space ⓘ |
| scientificDiscipline |
cosmic-ray physics
ⓘ
heliophysics ⓘ magnetospheric physics ⓘ space physics ⓘ |
| spaceAgency | NASA ⓘ |
| spacecraftBus | Explorer-class satellite bus ⓘ |
| status | mission completed ⓘ |
| studied |
Earth’s magnetosphere
ⓘ
Van Allen radiation belts NERFINISHED ⓘ cosmic rays ⓘ solar wind ⓘ |
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: Explorer 12 Description of subject: Explorer 12 was an early 1961 NASA scientific satellite that studied Earth’s radiation belts and interplanetary space as part of the Explorer program.
Referenced by (1)
Full triples — surface form annotated when it differs from this entity's canonical label.