US EditionResearchers Claim Earth, Milky Way Are Trapped in Cosmic Void
LOCAL REGION OF SPACE AROUND EARTH AND THE MILKY WAY GALAXY, JUL 8 – New analysis shows Earth and the Milky Way lie within a cosmic void about 20% less dense than average, potentially resolving conflicting Hubble constant measurements, researchers say.
- Researchers presented at the 2025 National Astronomy Meeting in Durham that Earth and the Milky Way lie near the center of a massive cosmic void influencing expansion rates.
- This theory arose to resolve the Hubble tension, where local measurements of the universe's expansion appear faster than predicted from early universe data.
- The void, about 2 billion light-years across and 20% less dense than average, causes matter to move outward, creating the illusion of faster local expansion.
- Dr. Banik explained that analyses of baryon acoustic oscillation data collected over the past two decades indicate that a model incorporating a local cosmic void is vastly more favored—by a factor on the order of one hundred million—compared to a model without such a void that aligns with Planck satellite CMB observations.
- If confirmed, this local void model could largely explain the Hubble tension as a local phenomenon, aligning with cosmologists' understanding of the universe's history.
61 Articles
61 Articles
Big-Bang echoes unmask a billion-light-year hole around Earth—and it’s stretching space faster
Our galaxy may reside in a billion-light-year-wide cosmic bubble that accelerates local expansion, potentially settling the long-running Hubble tension. Galaxy counts reveal a sparsely populated neighborhood, and “fossil” sound waves from the Big Bang bolster the void scenario, hinting that gravity has hollowed out this region. Confirming the bubble could refine the universe’s age and reshape our grasp of cosmic growth.
The hypothesis supported by the study of the 'sound' of the Big Bang (ANSA)
“Impossible” Cold Clouds Discovered in Milky Way’s Heart Challenge Astronomical Theories
A surprising discovery at the heart of the Milky Way is forcing scientists to rethink how massive structures called Fermi bubbles formed. Scientists have identified dense pockets of cold gas hidden inside vast, intensely hot clouds known as Fermi bubbles, located at the core of the Milky Way. This discovery contradicts existing theories about how [...]
Scientists Think Earth Might Be Stuck in a Giant Cosmic Void
Earth might not be at the center of the universe, but we could be smack in the middle of nothing. A new theory suggests that our galaxy is drifting through a massive, underpopulated patch of the universe—one that’s more than 2 billion light-years wide and strangely empty. After analyzing two decades’ worth of Big Bang echo data, astronomers now think a giant void could explain why the nearby universe seems to be expanding faster than the rest. T…
The Earth, Calea Lactee and even the entire "local region" of the universe around us would be located in a space of space, a smaller density space of matter compared to the rest of the universe, according to a new study by researchers at the University of Portsmouth, Great Britain, transmitted Space.com.
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