A new way to measure the #expansionrate of the #universe: #Redshiftdrift
In 1929 Edwin Hubble published the first solid evidence that the universe is expanding. Drawing upon data from Vesto Slipher and Henrietta Leavitt, Hubble demonstrated a correlation between galactic distance and redshift. The more distant a galaxy was, the more its light appeared shifted to the red end of the spectrum.
First-of-its-kind #measurement of the #universe's #expansionrate weighs in on a longstanding #debate
https://phys.org/news/2023-05-first-of-its-kind-universe-expansion-longstanding-debate.html
Thanks to data from a magnified, multiply imaged supernova, a team led by University of Minnesota Twin Cities researchers has successfully used a first-of-its-kind technique to measure the expansion rate of the universe. Their data provide insight into a longstanding debate in the field and could help scientists more accurately determine the universe's age and better understand the cosmos.
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