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.
Aliases (3)
Statements (42)
| Predicate | Object |
|---|---|
| instanceOf |
cosmological law
→
empirical relation → physical law → |
| alsoKnownAs |
Hubble–Lemaître law
→
Hubble’s law NERFINISHED → |
| 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 |
Hubble constant
→
cosmological distance → recessional velocity → |
| historicalPrecursor |
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 |
Friedmann equations
→
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 (9)
| Subject (surface form when different) | Predicate |
|---|---|
|
Edwin Hubble
("Hubble's law")
→
Georges Lemaître → |
knownFor |
|
Big Bang
("Hubble–Lemaître law")
→
Big Bang cosmology ("Hubble–Lemaître law") → |
supportedBy |
|
Lemaître–Hubble law
("Hubble–Lemaître law")
→
|
alsoKnownAs |
|
Edwin Hubble
("Hubble's law")
→
|
hasEponym |
|
Lemaître–Hubble law
("Hubble constant")
→
|
hasQuantity |
|
Big Bang cosmology
("Hubble constant")
→
|
parameterizedBy |
|
hypothesis of the primeval atom
("Hubble–Lemaître law")
→
|
relatedConcept |