Big Crunch scenario
E737174
The Big Crunch scenario is a cosmological hypothesis in which the expansion of the universe eventually reverses, causing all matter and space to collapse back into an extremely dense, hot state.
Observed surface forms (1)
| Surface form | Occurrences |
|---|---|
| Big Crunch | 1 |
Statements (47)
| Predicate | Object |
|---|---|
| instanceOf |
cosmological hypothesis
ⓘ
end-of-universe scenario ⓘ theoretical cosmological model ⓘ |
| alsoKnownAs | Big Crunch NERFINISHED ⓘ |
| analyzedUsing | Friedmann equations NERFINISHED ⓘ |
| basedOn | general relativity NERFINISHED ⓘ |
| canLeadTo | Big Bounce in cyclic cosmologies NERFINISHED ⓘ |
| category |
cosmological end-of-time hypotheses
ⓘ
theoretical physics concepts ⓘ |
| contrastsWith |
Big Freeze scenario
NERFINISHED
ⓘ
Big Rip scenario ⓘ Heat Death of the universe NERFINISHED ⓘ |
| dependsOn |
cosmological parameters
ⓘ
dark energy density ⓘ dark matter density ⓘ mean matter density ⓘ total energy density of the universe ⓘ |
| describes | possible fate of the universe ⓘ |
| discussedIn | cosmology textbooks ⓘ |
| disfavoredBy |
current measurements of dark energy equation of state
ⓘ
evidence for accelerated cosmic expansion ⓘ observations of distant Type Ia supernovae ⓘ |
| hasKeyConcept |
closed universe geometry
ⓘ
critical density of the universe ⓘ gravitational deceleration of expansion ⓘ |
| historicallyProposedBy | early 20th-century cosmologists ⓘ |
| implies |
cosmic microwave background temperature would increase in final phase
ⓘ
cosmic scale factor reaches a maximum then contracts ⓘ eventual destruction of large-scale cosmic structures ⓘ extreme curvature of spacetime at final stage ⓘ galaxies would move closer together over time in contraction phase ⓘ scale factor of the universe eventually decreases to zero ⓘ |
| involves |
end of spacetime as currently known
ⓘ
gravitational collapse of the universe ⓘ reversal of cosmic expansion ⓘ universe contracting to high density ⓘ universe contracting to high temperature ⓘ |
| relatedTo |
Big Bounce hypothesis
NERFINISHED
ⓘ
Friedmann–Lemaître–Robertson–Walker cosmologies NERFINISHED ⓘ cyclic universe models ⓘ |
| requires |
gravitational attraction to overcome expansion
ⓘ
universe to be closed or sufficiently dense ⓘ |
| status |
disfavored by current observations
ⓘ
speculative ⓘ |
| studiedIn | physical cosmology ⓘ |
| timeScale | would occur in the far future if realized ⓘ |
| timeSymmetryWith | Big Bang in some models ⓘ |
Referenced by (2)
Full triples — surface form annotated when it differs from this entity's canonical label.
this entity surface form:
Big Crunch