New research links Hubble tension to Earth's location in cosmic supervoid

New research suggests that the "Hubble tension," a disagreement in the universe's expansion rate, may be influenced by Earth's location in a large underdense region called the KBC supervoid. This supervoid could cause observations to show a faster expansion rate. The Hubble constant is calculated using two methods: one based on cosmic background radiation and the other on measuring distances to galaxies. The latter method consistently yields a higher value, leading to the Hubble tension. The KBC supervoid may skew these observations. The researchers propose that the supervoid's unique properties could explain the discrepancy. They found that being within this void makes the universe appear to expand faster than it actually does, potentially resolving the Hubble tension issue.