Lemaître–Hubble law
E99201
The Lemaître–Hubble law is the fundamental cosmological relation that expresses the proportionality between a galaxy’s recessional velocity and its distance, providing the first observational evidence for the expansion of the universe.
All labels observed (6)
| Label | Occurrences |
|---|---|
| Hubble–Lemaître law | 9 |
| Hubble’s law | 3 |
| Hubble constant | 2 |
| Hubble's law | 2 |
| Lemaître–Hubble law canonical | 1 |
| redshift–distance relation | 1 |
Statements (42)
| Predicate | Object |
|---|---|
| instanceOf |
cosmological law
ⓘ
empirical relation ⓘ physical law ⓘ |
| alsoKnownAs |
Lemaître–Hubble law
ⓘ
surface form:
Hubble–Lemaître law
Lemaître–Hubble law ⓘ
surface form:
Hubble’s law
|
| appliesTo |
extragalactic nebulae
ⓘ
galaxies ⓘ |
| assumes | cosmological principle ⓘ |
| category |
laws of astronomy
ⓘ
observational cosmology ⓘ |
| contradicts | static universe models ⓘ |
| describes |
expansion of the universe
ⓘ
proportionality between recessional velocity and distance of galaxies ⓘ |
| expressedAs | v = H₀ d ⓘ |
| field |
astrophysics
ⓘ
cosmology ⓘ physical cosmology ⓘ |
| hasConsequence |
no unique center of expansion in the universe
ⓘ
space itself is expanding ⓘ |
| hasParameter | Hubble constant H₀ ⓘ |
| hasQuantity |
Lemaître–Hubble law
self-linksurface differs
ⓘ
surface form:
Hubble constant
cosmological distance ⓘ recessional velocity ⓘ |
| historicalPrecursor |
A Relation between Distance and Radial Velocity among Extra-Galactic Nebulae
ⓘ
surface form:
Hubble’s 1929 velocity–distance relation
Lemaître’s 1927 paper on expanding universe ⓘ |
| implies | more distant galaxies recede faster ⓘ |
| influenced | acceptance of Big Bang theory over steady‑state theory ⓘ |
| isApproximationOf | general relativistic expansion dynamics ⓘ |
| mathematicalForm | linear relation between velocity and distance ⓘ |
| namedAfter |
Edwin Hubble
ⓘ
Georges Lemaître ⓘ |
| observationalBasis |
distance indicators such as Cepheid variables
ⓘ
redshift measurements of galaxies ⓘ |
| providesEvidenceFor |
Big Bang cosmology
ⓘ
non‑static universe ⓘ |
| relatedTo |
FLRW cosmological models
ⓘ
surface form:
Friedmann equations
FLRW cosmological models ⓘ
surface form:
Friedmann–Lemaître–Robertson–Walker metric
|
| scaleDependence | Hubble constant may vary with cosmological model and epoch ⓘ |
| usedFor |
determining cosmological parameters
ⓘ
estimating the age of the universe ⓘ |
| validRegime |
homogeneous and isotropic universe approximation
ⓘ
large cosmological scales ⓘ |
Referenced by (18)
Full triples — surface form annotated when it differs from this entity's canonical label.
this entity surface form:
Hubble's law
this entity surface form:
Hubble's law
this entity surface form:
Hubble–Lemaître law
this entity surface form:
Hubble–Lemaître law
this entity surface form:
Hubble constant
this entity surface form:
Hubble–Lemaître law
this entity surface form:
Hubble–Lemaître law
this entity surface form:
Hubble’s law
this entity surface form:
Hubble constant
this entity surface form:
Hubble–Lemaître law
this entity surface form:
Hubble’s law
this entity surface form:
Hubble’s law
this entity surface form:
Hubble–Lemaître law
A Relation between Distance and Radial Velocity among Extra-Galactic Nebulae
→
introducesConcept
→
Lemaître–Hubble law
ⓘ
this entity surface form:
Hubble–Lemaître law
A Relation between Distance and Radial Velocity among Extra-Galactic Nebulae
→
relatedConcept
→
Lemaître–Hubble law
ⓘ
this entity surface form:
redshift–distance relation
this entity surface form:
Hubble–Lemaître law
this entity surface form:
Hubble–Lemaître law