Blanco Telescope and Star Trails in the Night Sky
Researchers analyzed new data to provide one of the most accurate measurements of the Hubble constant. The Hubble constant has a long and controversial history with known disagreements between astronomers. More than a century has passed, and scientists are still discussing this issue.
Hubble's constant is the local rate of expansion of the Universe, which is the cornerstone of modern cosmology. This extension was first measured by Edwin Hubble in 1929, after which the Hubble Law was born. The key part of the law is the Hubble constant, which displays the exact rate of expansion. To obtain a new dimension, the researchers used a different methodology - the “reverse distance ladder” method, which allowed adding new cosmological results using Ia-type supernovae from the study of dark energy to the existing distance measurements.
However, not everything is so smooth. The new data are consistent with many others, but are in conflict with the findings of the Nobel laureate Adam Riess and his team. It seems to be brewing a new argument.