Could it transpire that the "Hubble tension" - that nagging difference
between the two main ways of measuring the expansion rate of the
universe - be resolved after all by new measurements?
Wendy Freedman, the John and Marion Sullivan University Professor in
Astronomy and Astrophysics at the University of Chicago, is hopeful it will
after using measurements of Red Giants to calibrate the measurements of
noisy Cepheid variable data.
Story here :-
https://phys.org/news/2021-06-confli...se-debate.html