Local Interstellar Cloud
E18765
The Local Interstellar Cloud is a diffuse, partially ionized region of gas and dust in the Milky Way through which the Solar System is currently traveling.
All labels observed (2)
| Label | Occurrences |
|---|---|
| Local Interstellar Cloud canonical | 10 |
| Local Interstellar Cloud neighborhood | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T156162 — 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 Interstellar Cloud Context triple: [Sun, memberOf, Local Interstellar Cloud]
-
A.
Pleiades
The Pleiades are a famous open star cluster in the constellation Taurus, often known as the Seven Sisters in Greek mythology.
-
B.
Milky Way
The Milky Way is the barred spiral galaxy that contains our Solar System and hundreds of billions of other stars.
-
C.
Hyades
The Hyades are a sisterhood of nymphs in Greek mythology, best known for their association with rain and their representation as a prominent open star cluster in the constellation Taurus.
-
D.
Solar System
The Solar System is the gravitationally bound system of the Sun and the celestial bodies that orbit it, including Earth and other planets, moons, asteroids, and comets.
-
E.
Kosmos
Kosmos is Alexander von Humboldt’s multi-volume work that presents a comprehensive scientific and philosophical overview of the natural world and the universe.
- 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 Interstellar Cloud Target entity description: The Local Interstellar Cloud is a diffuse, partially ionized region of gas and dust in the Milky Way through which the Solar System is currently traveling.
-
A.
Pleiades
The Pleiades are a famous open star cluster in the constellation Taurus, often known as the Seven Sisters in Greek mythology.
-
B.
Milky Way
The Milky Way is the barred spiral galaxy that contains our Solar System and hundreds of billions of other stars.
-
C.
Hyades
The Hyades are a sisterhood of nymphs in Greek mythology, best known for their association with rain and their representation as a prominent open star cluster in the constellation Taurus.
-
D.
Solar System
The Solar System is the gravitationally bound system of the Sun and the celestial bodies that orbit it, including Earth and other planets, moons, asteroids, and comets.
-
E.
Kosmos
Kosmos is Alexander von Humboldt’s multi-volume work that presents a comprehensive scientific and philosophical overview of the natural world and the universe.
- F. None of above. chosen
Statements (47)
| Predicate | Object |
|---|---|
| instanceOf |
astronomical object
ⓘ
astrophysical structure ⓘ interstellar cloud ⓘ |
| affects |
heliosphere size
ⓘ
shape of the heliosphere ⓘ |
| alsoKnownAs | Local Fluff ⓘ |
| contains |
dust
ⓘ
partially ionized gas ⓘ |
| hasApproximateDistanceScale | tens of light-years ⓘ |
| hasApproximateElectronDensity | about 0.1 electrons per cubic centimeter ⓘ |
| hasApproximateExtent |
about 10 parsecs
ⓘ
about 30 light-years ⓘ |
| hasApproximateHydrogenNumberDensity | 0.1 atoms per cubic centimeter ⓘ |
| hasApproximateMagneticFieldStrength | on the order of a few microgauss ⓘ |
| hasApproximateNeutralHydrogenColumnDensity | about 10^17 to 10^18 per square centimeter ⓘ |
| hasApproximateTemperature | about 7000 kelvin ⓘ |
| hasBoundaryInteractionWith | heliopause ⓘ |
| hasComposition |
helium
ⓘ
hydrogen ⓘ trace heavier elements ⓘ |
| hasDustToGasRatio | similar to average interstellar medium ⓘ |
| hasEffectOn | cosmic ray modulation near Earth ⓘ |
| hasIonizationState | partially ionized ⓘ |
| hasKinematicProperty | flows past the Sun ⓘ |
| hasMagneticField | yes ⓘ |
| hasObservationWavelength |
X-ray (indirect constraints)
ⓘ
ultraviolet ⓘ |
| hasPhase | warm partially ionized medium ⓘ |
| hasPhysicalState | diffuse ⓘ |
| hasRegionType | warm interstellar medium ⓘ |
| hasRelationToSun | current interstellar environment of the Sun ⓘ |
| hasScientificDiscipline |
astrophysics
ⓘ
interstellar medium studies ⓘ |
| isEmbeddedIn | hot low-density gas of the Local Bubble ⓘ |
| isNear |
Apex Cloud
ⓘ
G cloud ⓘ |
| isTraversedBy | Solar System ⓘ |
| isWithin |
Orion Arm
ⓘ
solar neighborhood ⓘ |
| locatedIn |
Local Bubble
ⓘ
Milky Way ⓘ |
| partOf | local interstellar medium ⓘ |
| relativeVelocityToSolarSystem |
about 15 miles per second
ⓘ
about 26 kilometers per second ⓘ |
| studiedBy |
space-based telescopes
ⓘ
ultraviolet absorption line observations ⓘ |
| surrounds | Solar System ⓘ |
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 Interstellar Cloud Description of subject: The Local Interstellar Cloud is a diffuse, partially ionized region of gas and dust in the Milky Way through which the Solar System is currently traveling.
Referenced by (11)
Full triples — surface form annotated when it differs from this entity's canonical label.
this entity surface form:
Local Interstellar Cloud neighborhood