8legs: Proceedings of the royal society a

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Can Our Model of the Cosmos Work Without Dark Energy? New Research Says It Can

Researchers propose a dark-energy-free expansion model based on Einstein's general relativity.
The study claims unstable solutions can mimic dark-energy acceleration without new energy components.
The team argues their approach stays within Einstein’s original framework, not invoking extra energy forms.
The authors acknowledge it is too early to know if cosmologists will adopt the model.
The standard model remains lambda-CDM, which uses dark energy to explain acceleration.
The paper discusses Friedmann spacetimes and their role in cosmic expansion.
The researchers explored a shockwave idea but found instability could drive acceleration.
The study claims accelerations from instability could exist at all orders.
The article notes how Einstein and Euler laid groundwork for the new approach.
Overall, the paper presents a provocative alternative with research-level scrutiny ahead.

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