Resolving the Hubble Tension: A New Explanation Emerges
In a recent study, researchers have presented a possible explanation to the ‘Hubble tension’ - the discrepancy between the two estimated values for the Hubble constant, a fundamental measure of the universe’s expansion rate. The study suggests that the tension can be explained by the presence of a new particle, known as a ‘sterile neutrino’, which interacts only through gravity and is difficult to detect. This particle could account for up to 5% of the universe’s total mass-energy density. The findings could provide an answer to the longstanding mystery of the Hubble tension, and further research could shed light on the nature of dark matter and dark energy.
source: Phys.org