Compare · The Origin of Our Universe

Zwicky Original Tired Light vs Modern Tired Light Revivals

Tired Light· within family

	Zwicky Original Tired Light Rejected	Modern Tired Light Revivals Rejected
Proposed	1929	1990s / 2010s
Key figures	Fritz Zwicky	Paul Marmet, Lyndon Ashmore
In one sentence	Fritz Zwicky proposed in 1929 that photons gradually lose energy as they traverse intergalactic space, producing the observed redshift-distance relation without requiring cosmic expansion.	Modern attempts by Paul Marmet, Lyndon Ashmore, and others have proposed specific plasma-based or electron-scattering tired-light mechanisms, but none has matched the combined surface-brightness, time-dilation, and CMB constraints.
Predictions	Redshift proportional to distance with no need for cosmic expansion Static universe consistent with Hubble's law No time dilation of distant events (a key contrast with expansion-based models)	Modified tired-light spectra in electron-photon interactions that could in principle be measured in plasma columns Static universe surface brightness scaling distinct from expansion-based predictions
Where it breaks	Provides no specific microphysical mechanism Any scattering process would necessarily blur distant images, contradicting observations of sharp distant galaxies and quasars Cannot account for the CMB, time dilation, or precision cosmological tests	Fast radio burst observations constrain intergalactic electron columns inconsistently with Marmet's model No revival has reproduced both Tolman surface brightness scaling and SN Ia time dilation simultaneously Has not been integrated into a quantitative cosmological model fitting CMB, BAO, and SNe together
Key unresolved problem	The blurring problem: no physical process, no microphysical mechanism, can slowly bleed energy from light over cosmic distances without also knocking the light off course and smearing the sharp images of distant galaxies and quasars.	The three-test problem: no revival passes all three checks at once, how distant galaxies dim with distance (the Tolman surface-brightness test), the stretched-out timing of distant supernovae, and the thin spread of intergalactic electrons now measured by fast radio bursts.
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Zwicky Original Tired Light

1929 · Rejected

Modern Tired Light Revivals

1990s / 2010s · Rejected

Proposed

1929

1990s / 2010s

Key figures

Fritz Zwicky

Paul Marmet, Lyndon Ashmore

In one sentence

Fritz Zwicky proposed in 1929 that photons gradually lose energy as they traverse intergalactic space, producing the observed redshift-distance relation without requiring cosmic expansion.

Modern attempts by Paul Marmet, Lyndon Ashmore, and others have proposed specific plasma-based or electron-scattering tired-light mechanisms, but none has matched the combined surface-brightness, time-dilation, and CMB constraints.

Predictions

Redshift proportional to distance with no need for cosmic expansion
Static universe consistent with Hubble's law
No time dilation of distant events (a key contrast with expansion-based models)

Modified tired-light spectra in electron-photon interactions that could in principle be measured in plasma columns
Static universe surface brightness scaling distinct from expansion-based predictions

Where it breaks

Provides no specific microphysical mechanism
Any scattering process would necessarily blur distant images, contradicting observations of sharp distant galaxies and quasars
Cannot account for the CMB, time dilation, or precision cosmological tests

Fast radio burst observations constrain intergalactic electron columns inconsistently with Marmet's model
No revival has reproduced both Tolman surface brightness scaling and SN Ia time dilation simultaneously
Has not been integrated into a quantitative cosmological model fitting CMB, BAO, and SNe together

Key unresolved problem

The blurring problem: no physical process, no microphysical mechanism, can slowly bleed energy from light over cosmic distances without also knocking the light off course and smearing the sharp images of distant galaxies and quasars.

The three-test problem: no revival passes all three checks at once, how distant galaxies dim with distance (the Tolman surface-brightness test), the stretched-out timing of distant supernovae, and the thin spread of intergalactic electrons now measured by fast radio bursts.

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