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flag New study suggests universe's expansion varies by region density, not dark energy, based on nearby supernova data.

flag A new study challenges the idea that dark energy is causing the universe's expansion to speed up. flag Instead, it proposes the Timescape model, suggesting that expansion speeds vary based on the density of different regions, with more empty areas expanding faster. flag This model better explains some nearby supernova data than the standard Lambda-CDM model, which relies on dark energy. flag Though intriguing, the study's findings are preliminary and need further validation with more comprehensive data.

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