big bang nucleosynthesis
E24000
Big bang nucleosynthesis is the early-universe process, occurring within the first few minutes after the Big Bang, in which light atomic nuclei such as hydrogen, helium, and small amounts of other elements were formed.
All labels observed (3)
| Label | Occurrences |
|---|---|
| Big Bang nucleosynthesis | 4 |
| big bang nucleosynthesis canonical | 2 |
| Nucleogenesis (Part One) | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T189508 — 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: big bang nucleosynthesis Context triple: [deuteron, isProducedIn, big bang nucleosynthesis]
-
A.
Oppenheimer–Phillips process
The Oppenheimer–Phillips process is a nuclear reaction mechanism in which a deuteron interacting with a target nucleus effectively transfers its neutron while the proton is repelled, enabling certain reactions to occur at lower energies than would otherwise be required.
-
B.
Chandrasekhar limit
The Chandrasekhar limit is the maximum mass a white dwarf star can have before collapsing under its own gravity, playing a crucial role in determining its ultimate fate as a neutron star or black hole.
-
C.
The Lives of the Stars
"The Lives of the Stars" is an episode of the science documentary series *Cosmos: A Personal Voyage* that explores the birth, evolution, and death of stars and their role in shaping the universe.
-
D.
Oppenheimer–Snyder model
The Oppenheimer–Snyder model is a pioneering theoretical description of gravitational collapse in general relativity, providing one of the first rigorous treatments of how a massive star can form a black hole.
-
E.
Drake equation
The Drake equation is a probabilistic formula used to estimate the number of technologically advanced extraterrestrial civilizations that might exist in our galaxy.
- 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: big bang nucleosynthesis Target entity description: Big bang nucleosynthesis is the early-universe process, occurring within the first few minutes after the Big Bang, in which light atomic nuclei such as hydrogen, helium, and small amounts of other elements were formed.
-
A.
Oppenheimer–Phillips process
The Oppenheimer–Phillips process is a nuclear reaction mechanism in which a deuteron interacting with a target nucleus effectively transfers its neutron while the proton is repelled, enabling certain reactions to occur at lower energies than would otherwise be required.
-
B.
Chandrasekhar limit
The Chandrasekhar limit is the maximum mass a white dwarf star can have before collapsing under its own gravity, playing a crucial role in determining its ultimate fate as a neutron star or black hole.
-
C.
The Lives of the Stars
"The Lives of the Stars" is an episode of the science documentary series *Cosmos: A Personal Voyage* that explores the birth, evolution, and death of stars and their role in shaping the universe.
-
D.
Oppenheimer–Snyder model
The Oppenheimer–Snyder model is a pioneering theoretical description of gravitational collapse in general relativity, providing one of the first rigorous treatments of how a massive star can form a black hole.
-
E.
Drake equation
The Drake equation is a probabilistic formula used to estimate the number of technologically advanced extraterrestrial civilizations that might exist in our galaxy.
- F. None of above. chosen
Statements (49)
| Predicate | Object |
|---|---|
| instanceOf |
cosmological process
ⓘ
nucleosynthesis process ⓘ physical process ⓘ |
| alsoKnownAs |
BBN
ⓘ
primordial nucleosynthesis ⓘ |
| constrains |
baryon density of the universe
ⓘ
number of relativistic species in the early universe ⓘ possible new physics beyond the Standard Model ⓘ |
| dependsOn |
baryon-to-photon ratio
ⓘ
expansion rate of the universe ⓘ neutron-to-proton ratio ⓘ number of light neutrino species ⓘ |
| differentFrom | stellar nucleosynthesis ⓘ |
| doesNotProduce | significant amounts of elements heavier than lithium ⓘ |
| endsWhen | universe becomes too cool and diffuse for further nuclear fusion ⓘ |
| explainsAbundanceOf |
primordial deuterium
ⓘ
primordial helium ⓘ primordial lithium ⓘ |
| follows | quark–hadron transition ⓘ |
| hasOpenProblem | cosmological lithium problem ⓘ |
| helium4MassFraction | about 25 percent ⓘ |
| hydrogenMassFraction | about 75 percent ⓘ |
| involves |
neutron–proton interconversion
ⓘ
nuclear fusion reactions ⓘ weak interaction processes ⓘ |
| occursAtRedshift | greater than 10^8 ⓘ |
| occursAtTemperature |
about 0.1 to 1 MeV
ⓘ
about 1 billion kelvin ⓘ |
| occursIn | early universe ⓘ |
| precedes |
formation of the cosmic microwave background
ⓘ
recombination ⓘ |
| primaryProduct |
helium-4
ⓘ
hydrogen-1 ⓘ |
| produces |
deuterium
ⓘ
helium-3 ⓘ helium-4 ⓘ hydrogen-1 ⓘ light atomic nuclei ⓘ lithium-7 ⓘ trace amounts of beryllium-7 ⓘ |
| providesEvidenceFor |
Big Bang cosmology
ⓘ
surface form:
Big Bang model
|
| relatedTo | stellar nucleosynthesis ⓘ |
| sensitiveTo | cosmological parameters ⓘ |
| startsWhen | universe cools below about 1 billion kelvin ⓘ |
| studiedIn |
astrophysics
ⓘ
physical cosmology ⓘ |
| tests | standard cosmological model ⓘ |
| timeAfterBigBang |
approximately 1 to 20 minutes
ⓘ
first few minutes ⓘ |
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: big bang nucleosynthesis Description of subject: Big bang nucleosynthesis is the early-universe process, occurring within the first few minutes after the Big Bang, in which light atomic nuclei such as hydrogen, helium, and small amounts of other elements were formed.
Referenced by (7)
Full triples — surface form annotated when it differs from this entity's canonical label.
this entity surface form:
Nucleogenesis (Part One)
this entity surface form:
Big Bang nucleosynthesis
this entity surface form:
Big Bang nucleosynthesis
this entity surface form:
Big Bang nucleosynthesis