Eridanus Supervoid
E540385
Eridanus Supervoid is an unusually large and sparse region of space with significantly fewer galaxies than average, often studied in connection with anomalies in the cosmic microwave background.
All labels observed (1)
| Label | Occurrences |
|---|---|
| Eridanus Supervoid canonical | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T5723773 — 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: Eridanus Supervoid Context triple: [Eridanus, containsDeepSkyObject, Eridanus Supervoid]
-
A.
Shapley Supercluster
The Shapley Supercluster is one of the most massive known concentrations of galaxies in the nearby universe, exerting a significant gravitational influence on surrounding cosmic structures.
-
B.
Perseus–Pisces Supercluster
The Perseus–Pisces Supercluster is a massive, elongated concentration of galaxy clusters stretching hundreds of millions of light-years across space and forming one of the most prominent large-scale structures in the nearby universe.
-
C.
Laniakea Supercluster
Laniakea Supercluster is a vast cosmic structure encompassing the Milky Way and hundreds of thousands of other galaxies, forming one of the largest known galaxy superclusters in the observable universe.
-
D.
Great Attractor region
The Great Attractor region is a massive gravitational anomaly in intergalactic space that strongly influences the motion of nearby galaxy clusters, including those in the Hydra–Centaurus Supercluster.
-
E.
Hydra–Centaurus Supercluster
The Hydra–Centaurus Supercluster is a massive nearby concentration of galaxy clusters that forms one of the dominant structures in our cosmic neighborhood and serves as a major component of the larger Laniakea Supercluster.
- 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: Eridanus Supervoid Target entity description: Eridanus Supervoid is an unusually large and sparse region of space with significantly fewer galaxies than average, often studied in connection with anomalies in the cosmic microwave background.
-
A.
Shapley Supercluster
The Shapley Supercluster is one of the most massive known concentrations of galaxies in the nearby universe, exerting a significant gravitational influence on surrounding cosmic structures.
-
B.
Perseus–Pisces Supercluster
The Perseus–Pisces Supercluster is a massive, elongated concentration of galaxy clusters stretching hundreds of millions of light-years across space and forming one of the most prominent large-scale structures in the nearby universe.
-
C.
Laniakea Supercluster
Laniakea Supercluster is a vast cosmic structure encompassing the Milky Way and hundreds of thousands of other galaxies, forming one of the largest known galaxy superclusters in the observable universe.
-
D.
Great Attractor region
The Great Attractor region is a massive gravitational anomaly in intergalactic space that strongly influences the motion of nearby galaxy clusters, including those in the Hydra–Centaurus Supercluster.
-
E.
Hydra–Centaurus Supercluster
The Hydra–Centaurus Supercluster is a massive nearby concentration of galaxy clusters that forms one of the dominant structures in our cosmic neighborhood and serves as a major component of the larger Laniakea Supercluster.
- F. None of above. chosen
Statements (46)
| Predicate | Object |
|---|---|
| instanceOf |
astronomical structure
ⓘ
cosmic void ⓘ |
| comparedTo | typical cosmic voids ⓘ |
| discoveredUsing |
galaxy surveys
ⓘ
optical surveys ⓘ radio observations ⓘ |
| hasAlternativeName | Eridanus Void NERFINISHED ⓘ |
| hasApproximateDiameter | hundreds of megaparsecs ⓘ |
| hasApproximateRedshift | z ≈ 0.2 ⓘ |
| hasContext |
cosmic variance studies
ⓘ
large-angle anomalies in the CMB ⓘ search for non-standard cosmology ⓘ |
| hasProperty |
associated with CMB anomalies
ⓘ
candidate explanation for CMB Cold Spot ⓘ extended along line of sight ⓘ low galaxy density compared to cosmic mean ⓘ possibly one of the largest known voids ⓘ significantly fewer galaxies than average ⓘ sparse distribution of galaxies ⓘ statistical significance under discussion in literature ⓘ three-dimensional underdensity ⓘ underdense region of the universe ⓘ unusually large ⓘ |
| hasSignificance |
challenges standard cosmological model if anomaly confirmed
ⓘ
constrains cosmological parameters ⓘ tests Gaussianity of CMB fluctuations ⓘ tests isotropy of the universe ⓘ |
| hasUncertainty |
exact size is debated
ⓘ
role in producing CMB Cold Spot is debated ⓘ |
| inferredFrom |
CMB temperature maps
ⓘ
galaxy number counts ⓘ photometric redshift surveys ⓘ |
| locatedIn |
constellation Eridanus
ⓘ
southern celestial hemisphere ⓘ |
| observedBy |
Planck spacecraft
NERFINISHED
ⓘ
WMAP NERFINISHED ⓘ |
| partOf | large-scale structure of the universe ⓘ |
| possibleCauseOf | part of observed CMB Cold Spot temperature decrement ⓘ |
| relatedTo |
CMB Cold Spot
NERFINISHED
ⓘ
cosmic microwave background NERFINISHED ⓘ dark energy NERFINISHED ⓘ integrated Sachs–Wolfe effect NERFINISHED ⓘ ΛCDM model NERFINISHED ⓘ |
| studiedInField |
cosmology
ⓘ
large-scale structure of the universe ⓘ observational cosmology ⓘ |
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: Eridanus Supervoid Description of subject: Eridanus Supervoid is an unusually large and sparse region of space with significantly fewer galaxies than average, often studied in connection with anomalies in the cosmic microwave background.
Referenced by (1)
Full triples — surface form annotated when it differs from this entity's canonical label.