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Why cosmologists are starting to doubt the standard model of the universe | Ellis, de Rham, Ekeberg

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New observations are forcing cosmologists to ask whether dark energy itself needs a rethink — and what replacing the standard model would actually cost.

Standard Model of CosmologyDark EnergyParadigm ShiftTheory of General Relativity

Theory Briefing

  • The standard cosmological model is under pressure from new observations that it struggles to explain, prompting debate among leading cosmologists.
  • Dark energy — the mysterious force driving the universe's expansion — is a central target for revision if the model is to be updated.
  • Physicists Ellis, de Rham, and Ekeberg debate whether the fix requires tweaking existing theory or scrapping foundational assumptions entirely.
  • A new theory compatible with the observations may demand a fundamentally different account of how the universe is structured and evolves.