Mira stars
Mira Stars Provide New Insights into Cosmic Expansion
A study from IUCAA, co-authored by Nobel laureate Adam Riess, utilized 40 oxygen-rich Mira variable stars to achieve a precise measurement of the Hubble constant, determining it with 3.7% accuracy. This research offers a new calibration method for cosmic distances, potentially resolving the ongoing Hubble tension debate in cosmology.