horizon problem

proper noun

The cosmological fine-tuning problem of explaining the observed homogeneity of causally disconnected regions of space in the absence of a mechanism that sets the same initial conditions everywhere.

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Meanings

proper noun
  1. astronomyThe cosmological fine-tuning problem of explaining the observed homogeneity of causally disconnected regions of space in the absence of a mechanism that sets the same initial conditions everywhere.

Translations

Finnish horisonttiongelma
  • horisonttiongelmaTranslations
German Horizontproblem
  • HorizontproblemTranslations
Polish problem horyzontu
  • problem horyzontuTranslations
Cite this entry
APA

horizon problem. (n.d.). In WatkinsX Dictionary. Retrieved November 3, 2026, from https://dictionary.watkinsx.com/word/horizon%20problem

MLA

“horizon problem.” WatkinsX Dictionary, https://dictionary.watkinsx.com/word/horizon%20problem. Accessed November 3, 2026.

Chicago

WatkinsX Dictionary, s.v. “horizon problem,” accessed November 3, 2026, https://dictionary.watkinsx.com/word/horizon%20problem.

Source: horizon problem on Wiktionary, CC BY-SA 4.0.