Astronomers propose that the Earth and the Milky Way galaxy may reside in a vast void extending billions of light years, which might clarify the Hubble tension. This phenomenon refers to the observed slower expansion rate of the older universe compared to younger regions. A local void, about a billion light years in radius and 20 percent less dense than average, could explain this discrepancy. The theory suggests that matter is pulled towards higher-density areas, causing the void to become emptier over time, thereby supporting the hypothesis of a localized cosmic anomaly.
The Earth and the Milky Way galaxy could be trapped in a huge void billions of light years across, potentially explaining the Hubble tension.
A local void is a promising solution to the Hubble tension, as the discrepancy between local and distant expansion rates suggests a unique phenomenon affecting our region.
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