Observational Evidence from Supernovae for an Accelerating Universe and a Cosmological Constant
E934860
"Observational Evidence from Supernovae for an Accelerating Universe and a Cosmological Constant" is a landmark 1998 astrophysics paper that used distant Type Ia supernovae to demonstrate that the universe’s expansion is accelerating, providing strong evidence for dark energy.
All labels observed (2)
How this entity was disambiguated
This entity first appeared as the object of triple T11583756 — 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: Observational Evidence from Supernovae for an Accelerating Universe and a Cosmological Constant Context triple: [High-z Supernova Search Team, notablePublication, Observational Evidence from Supernovae for an Accelerating Universe and a Cosmological Constant]
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A.
Supernova Cosmology Project
The Supernova Cosmology Project is an international research collaboration that used observations of distant Type Ia supernovae to discover the accelerating expansion of the universe, providing key evidence for dark energy.
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B.
Quintessence: The Mystery of Missing Mass in the Universe
"Quintessence: The Mystery of Missing Mass in the Universe" is a popular science book that explores the nature of dark matter, dark energy, and the cosmic forces shaping the universe’s structure and fate.
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C.
The Large-Scale Structure of the Universe
The Large-Scale Structure of the Universe is a foundational cosmology book by James Peebles that systematically develops the theory and observations of how matter is distributed on the largest cosmic scales.
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D.
Recalibration of the Hubble constant
Recalibration of the Hubble constant is a landmark astrophysical study by Allan R. Sandage that refined the value of the universe’s expansion rate using improved distance measurements to galaxies.
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E.
Hubble–Humason galaxy redshift measurements
The Hubble–Humason galaxy redshift measurements are a landmark set of observations that extended and refined Edwin Hubble’s work on the expanding universe by systematically measuring the redshifts of distant galaxies.
- 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: Observational Evidence from Supernovae for an Accelerating Universe and a Cosmological Constant Target entity description: "Observational Evidence from Supernovae for an Accelerating Universe and a Cosmological Constant" is a landmark 1998 astrophysics paper that used distant Type Ia supernovae to demonstrate that the universe’s expansion is accelerating, providing strong evidence for dark energy.
-
A.
Supernova Cosmology Project
The Supernova Cosmology Project is an international research collaboration that used observations of distant Type Ia supernovae to discover the accelerating expansion of the universe, providing key evidence for dark energy.
-
B.
Quintessence: The Mystery of Missing Mass in the Universe
"Quintessence: The Mystery of Missing Mass in the Universe" is a popular science book that explores the nature of dark matter, dark energy, and the cosmic forces shaping the universe’s structure and fate.
-
C.
The Large-Scale Structure of the Universe
The Large-Scale Structure of the Universe is a foundational cosmology book by James Peebles that systematically develops the theory and observations of how matter is distributed on the largest cosmic scales.
-
D.
Recalibration of the Hubble constant
Recalibration of the Hubble constant is a landmark astrophysical study by Allan R. Sandage that refined the value of the universe’s expansion rate using improved distance measurements to galaxies.
-
E.
Hubble–Humason galaxy redshift measurements
The Hubble–Humason galaxy redshift measurements are a landmark set of observations that extended and refined Edwin Hubble’s work on the expanding universe by systematically measuring the redshifts of distant galaxies.
- F. None of above. chosen
Statements (46)
| Predicate | Object |
|---|---|
| instanceOf |
astrophysics paper
ⓘ
cosmology paper ⓘ scientific paper ⓘ |
| category | supernova cosmology ⓘ |
| conclusion |
a cosmological constant or similar dark energy component is required in the cosmological model
ⓘ
the expansion of the universe is accelerating ⓘ |
| cosmologicalParameterDiscussed |
cosmological constant density parameter Ω_Λ
ⓘ
cosmological constant Λ ⓘ matter density parameter Ω_m ⓘ |
| dataType | luminosity distance versus redshift ⓘ |
| era | late 20th century cosmology ⓘ |
| evidenceAgainst | simple matter-dominated decelerating universe ⓘ |
| evidenceType | observational evidence ⓘ |
| field |
astrophysics
ⓘ
cosmology ⓘ |
| impact |
contributed to the standard cosmological model with dark energy
ⓘ
helped establish the existence of dark energy ⓘ provided first strong direct evidence for an accelerating universe ⓘ |
| implies | cosmic expansion rate has increased over time ⓘ |
| involves | comparison of observed supernova brightness with theoretical cosmological models ⓘ |
| keyConcept |
Hubble expansion
ⓘ
cosmic acceleration ⓘ standard candles in cosmology ⓘ |
| language | English ⓘ |
| mainSubject |
accelerating expansion of the universe
ⓘ
cosmological constant ⓘ dark energy ⓘ |
| method |
Hubble diagram of high-redshift supernovae
ⓘ
standard candle analysis of Type Ia supernovae ⓘ |
| objectOfStudy | distant high-redshift supernovae ⓘ |
| providesEvidenceFor |
accelerating universe
ⓘ
dark energy ⓘ nonzero cosmological constant ⓘ |
| publicationType | peer-reviewed article ⓘ |
| publicationYear | 1998 ⓘ |
| recognizedAs |
key discovery paper for dark energy
ⓘ
landmark paper in cosmology ⓘ |
| relatedConcept |
Friedmann–Lemaître–Robertson–Walker cosmology
NERFINISHED
ⓘ
Hubble diagram of Type Ia supernovae ⓘ distance modulus ⓘ redshift ⓘ |
| shortTitle | Observational Evidence from Supernovae for an Accelerating Universe and a Cosmological Constant NERFINISHED ⓘ |
| shows | distant Type Ia supernovae are dimmer than expected in a decelerating universe ⓘ |
| supportsModel | ΛCDM cosmological model NERFINISHED ⓘ |
| title | Observational Evidence from Supernovae for an Accelerating Universe and a Cosmological Constant NERFINISHED ⓘ |
| usesObservationOf | Type Ia supernovae ⓘ |
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: Observational Evidence from Supernovae for an Accelerating Universe and a Cosmological Constant Description of subject: "Observational Evidence from Supernovae for an Accelerating Universe and a Cosmological Constant" is a landmark 1998 astrophysics paper that used distant Type Ia supernovae to demonstrate that the universe’s expansion is accelerating, providing strong evidence for dark energy.
Referenced by (2)
Full triples — surface form annotated when it differs from this entity's canonical label.
High-z Supernova Search Team
→
notablePublication
→
Observational Evidence from Supernovae for an Accelerating Universe and a Cosmological Constant
ⓘ
Adam G. Riess
→
notableWork
→
Observational Evidence from Supernovae for an Accelerating Universe and a Cosmological Constant
ⓘ
this entity surface form:
High-z Supernova Search Team discovery paper on cosmic acceleration