Local Cavity
E459062
The Local Cavity is a low-density region of interstellar space surrounding the Solar System, largely cleared of gas and dust by past supernovae and stellar winds.
All labels observed (1)
| Label | Occurrences |
|---|---|
| Local Cavity canonical | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T4618048 — 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: Local Cavity Context triple: [Local Hot Bubble, relatedTo, Local Cavity]
-
A.
Cave
Cave is an American psychedelic rock band known for its hypnotic, groove-driven instrumentals and experimental, krautrock-influenced sound.
-
B.
Cave Rock
Cave Rock is a prominent volcanic rock formation and culturally significant Washoe Tribe site on the southeastern shore of Lake Tahoe in Nevada.
-
C.
Calw
Calw is a historic town in the Black Forest region of southwestern Germany, known as the birthplace of writer Hermann Hesse and for its well-preserved timber-framed architecture.
-
D.
Shell Grotto
Shell Grotto is an underground passageway in Margate, England, famed for its mysterious origin and walls intricately decorated with millions of seashells.
-
E.
Mole Cave
Mole Cave is a notable cave within South Africa’s Cradle of Humankind World Heritage Site, known for its rich fossil-bearing deposits that shed light on early human evolution.
- 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: Local Cavity Target entity description: The Local Cavity is a low-density region of interstellar space surrounding the Solar System, largely cleared of gas and dust by past supernovae and stellar winds.
-
A.
Cave
Cave is an American psychedelic rock band known for its hypnotic, groove-driven instrumentals and experimental, krautrock-influenced sound.
-
B.
Cave Rock
Cave Rock is a prominent volcanic rock formation and culturally significant Washoe Tribe site on the southeastern shore of Lake Tahoe in Nevada.
-
C.
Calw
Calw is a historic town in the Black Forest region of southwestern Germany, known as the birthplace of writer Hermann Hesse and for its well-preserved timber-framed architecture.
-
D.
Shell Grotto
Shell Grotto is an underground passageway in Margate, England, famed for its mysterious origin and walls intricately decorated with millions of seashells.
-
E.
Mole Cave
Mole Cave is a notable cave within South Africa’s Cradle of Humankind World Heritage Site, known for its rich fossil-bearing deposits that shed light on early human evolution.
- F. None of above. chosen
Statements (47)
| Predicate | Object |
|---|---|
| instanceOf |
astrophysical cavity
ⓘ
interstellar medium structure ⓘ low-density region of interstellar space ⓘ |
| affects |
distribution of interstellar dust near the Sun
ⓘ
local interstellar radiation field ⓘ propagation of cosmic rays near the Sun ⓘ |
| alsoKnownAs | Local Bubble NERFINISHED ⓘ |
| boundedBy |
Local Interstellar Cloud
NERFINISHED
ⓘ
Loop I superbubble region NERFINISHED ⓘ denser interstellar clouds ⓘ |
| contains |
Local Interstellar Cloud
NERFINISHED
ⓘ
Solar neighborhood NERFINISHED ⓘ other small neutral clouds ⓘ |
| hasApproximateRadius |
~100 parsecs
ⓘ
~300 light-years ⓘ |
| hasAverageHydrogenNumberDensity | ~0.005 atoms per cubic centimeter (order of magnitude) ⓘ |
| hasOriginHypothesis |
created by multiple supernovae in a nearby OB association
ⓘ
may be related to past activity in the Scorpius–Centaurus OB association ⓘ |
| hasProperty |
hot plasma-filled interior
ⓘ
low dust density ⓘ low gas density ⓘ |
| hasScientificDiscipline |
astrophysics
ⓘ
interstellar medium studies ⓘ |
| hasShape | roughly irregular, elongated cavity ⓘ |
| hasTemperature | ~10^6 K (order of magnitude) ⓘ |
| hasUncertain |
exact number and identity of responsible supernovae
ⓘ
exact temperature and density structure ⓘ precise three-dimensional shape ⓘ |
| isLargelyClearedBy |
past supernova explosions
ⓘ
stellar winds from massive stars ⓘ |
| isPartOf | network of superbubbles in the Galactic disk ⓘ |
| locatedIn |
Milky Way
ⓘ
Orion Arm NERFINISHED ⓘ local interstellar medium ⓘ |
| mappedBy |
3D dust extinction maps
ⓘ
X-ray and EUV observations ⓘ stellar absorption-line measurements ⓘ |
| observedIn |
21-cm neutral hydrogen surveys
ⓘ
soft X-ray background emission ⓘ ultraviolet absorption lines ⓘ |
| overlapsWith | Loop I Bubble NERFINISHED ⓘ |
| relevantFor |
interpretation of heliosphere boundary conditions
ⓘ
studies of soft X-ray background ⓘ studies of star formation history near the Sun ⓘ |
| studiedIn | models of the local interstellar medium ⓘ |
| surrounds | Solar System NERFINISHED ⓘ |
| timeScaleOfFormation | tens of millions of years (order of magnitude) ⓘ |
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: Local Cavity Description of subject: The Local Cavity is a low-density region of interstellar space surrounding the Solar System, largely cleared of gas and dust by past supernovae and stellar winds.
Referenced by (1)
Full triples — surface form annotated when it differs from this entity's canonical label.