Cosmology: universe age reconfirmed (Introduction)

by David Turell , Monday, January 04, 2021, 18:34 (1209 days ago) @ David Turell

The latest study gets the same result:

https://phys.org/news/2021-01-astronomers-universe-billion-years.html

"From an observatory high above Chile's Atacama Desert, astronomers have taken a new look at the oldest light in the universe.

"Their observations, plus a bit of cosmic geometry, suggest that the universe is 13.77 billion years old—give or take 40 million years. A Cornell University researcher co-authored one of two papers about the findings, which add a fresh twist to an ongoing debate in the astrophysics community.

"The new estimate, using data gathered at the National Science Foundation's Atacama Cosmology Telescope (ACT), matches the one provided by the standard model of the universe, as well as measurements of the same light made by the European Space Agency's Planck satellite, which measured remnants of the Big Bang from 2009 to '13.

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"'Now we've come up with an answer where Planck and ACT agree," said Simone Aiola, a researcher at the Flatiron Institute's Center for Computational Astrophysics and first author of one of two papers. "It speaks to the fact that these difficult measurements are reliable.'"

Comment: Nice to know a definite estimate. And remember the Milky Way started at 1.8 billion years later