Earth’s outer radiation belt
E350639
Earth’s outer radiation belt is a torus-shaped region of space around Earth filled with high-energy charged particles trapped by the planet’s magnetic field.
All labels observed (3)
| Label | Occurrences |
|---|---|
| Earth’s outer radiation belt canonical | 2 |
| Van Allen radiation belts | 1 |
| outer Van Allen belt | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T3339431 — 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: Earth’s outer radiation belt Context triple: [James A. Van Allen, hasDiscovered, Earth’s outer radiation belt]
-
A.
Earth’s inner radiation belt
Earth’s inner radiation belt is a dense region of high-energy charged particles trapped by Earth’s magnetic field, forming the inner part of the Van Allen radiation belts surrounding the planet.
-
B.
Van Allen
Van Allen is a surname most prominently associated with American space scientist James A. Van Allen, after whom the Van Allen radiation belts encircling Earth are named.
-
C.
Van Allen Probes mission
The Van Allen Probes mission was a NASA space mission launched in 2012 to study Earth's radiation belts and the dynamics of charged particles trapped within them.
-
D.
Pegasus micrometeoroid satellites
Pegasus micrometeoroid satellites were early NASA spacecraft designed to measure the frequency and impact of tiny meteoroids in near-Earth space to inform spacecraft shielding and safety.
-
E.
Parker spiral model of the interplanetary magnetic field
The Parker spiral model of the interplanetary magnetic field describes how the Sun’s rotating, magnetized solar wind stretches the solar magnetic field into an Archimedean spiral shape throughout the heliosphere.
- 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: Earth’s outer radiation belt Target entity description: Earth’s outer radiation belt is a torus-shaped region of space around Earth filled with high-energy charged particles trapped by the planet’s magnetic field.
-
A.
Earth’s inner radiation belt
Earth’s inner radiation belt is a dense region of high-energy charged particles trapped by Earth’s magnetic field, forming the inner part of the Van Allen radiation belts surrounding the planet.
-
B.
Van Allen
Van Allen is a surname most prominently associated with American space scientist James A. Van Allen, after whom the Van Allen radiation belts encircling Earth are named.
-
C.
Van Allen Probes mission
The Van Allen Probes mission was a NASA space mission launched in 2012 to study Earth's radiation belts and the dynamics of charged particles trapped within them.
-
D.
Pegasus micrometeoroid satellites
Pegasus micrometeoroid satellites were early NASA spacecraft designed to measure the frequency and impact of tiny meteoroids in near-Earth space to inform spacecraft shielding and safety.
-
E.
Parker spiral model of the interplanetary magnetic field
The Parker spiral model of the interplanetary magnetic field describes how the Sun’s rotating, magnetized solar wind stretches the solar magnetic field into an Archimedean spiral shape throughout the heliosphere.
- F. None of above. chosen
Statements (48)
| Predicate | Object |
|---|---|
| instanceOf |
astrophysical structure
ⓘ
radiation belt ⓘ |
| affects |
design of satellite orbits
ⓘ
radiation shielding requirements for spacecraft ⓘ |
| contains |
electrons
ⓘ
high-energy charged particles ⓘ some protons ⓘ |
| extendsFrom | about 3 Earth radii from Earth’s center ⓘ |
| extendsTo | about 7 Earth radii from Earth’s center ⓘ |
| hasAlternativeName |
Earth’s outer radiation belt
ⓘ
surface form:
outer Van Allen belt
|
| hasElectronEnergiesUpTo | about 10 MeV ⓘ |
| hasInnerBoundary | around L-shell 3 ⓘ |
| hasOuterBoundary | around L-shell 7 ⓘ |
| hasShape | torus ⓘ |
| hasTypicalElectronEnergiesUpTo | several MeV ⓘ |
| isAlignedWith | Earth’s magnetic equator ⓘ |
| isDetectedBy | Explorer 4 spacecraft ⓘ |
| isDiscoveredBy |
James A. Van Allen
ⓘ
surface form:
James Van Allen
|
| isDiscoveredIn | 1958 ⓘ |
| isDominatedBy | energetic electrons ⓘ |
| isHighlyVariable | true ⓘ |
| isImportantFor | space weather studies ⓘ |
| isInfluencedBy |
coronal mass ejections
ⓘ
geomagnetic storms ⓘ high-speed solar wind streams ⓘ solar wind ⓘ |
| isLocatedIn | near-Earth space ⓘ |
| isLostBy |
atmospheric precipitation of particles
ⓘ
magnetopause shadowing ⓘ |
| isMaintainedBy |
radial diffusion
ⓘ
wave–particle interactions ⓘ |
| isMoreVariableThan | Earth’s inner radiation belt ⓘ |
| isObservedWith |
magnetospheric imagers
ⓘ
particle detectors on satellites ⓘ |
| isRegionOf | intense radiation ⓘ |
| isSeparatedBy | slot region ⓘ |
| isSeparatedFrom | Earth’s inner radiation belt ⓘ |
| isStudiedBy |
Cluster mission
ⓘ
THEMIS mission ⓘ Van Allen Probes mission ⓘ |
| isTrappedBy | Earth’s magnetic field ⓘ |
| orbits | Earth ⓘ |
| partOf |
Earth’s magnetosphere
ⓘ
Earth’s radiation belts ⓘ
surface form:
Van Allen radiation belts
|
| posesRiskTo |
astronauts outside low Earth orbit
ⓘ
satellites ⓘ spacecraft electronics ⓘ |
| surrounds | Earth’s inner radiation belt ⓘ |
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: Earth’s outer radiation belt Description of subject: Earth’s outer radiation belt is a torus-shaped region of space around Earth filled with high-energy charged particles trapped by the planet’s magnetic field.
Referenced by (4)
Full triples — surface form annotated when it differs from this entity's canonical label.
this entity surface form:
Van Allen radiation belts
this entity surface form:
outer Van Allen belt