B Could a Galaxy Older than 13.8 Billion Years Redefine Cosmology?

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What would happen if they found a galaxy that was older than 13.8 billion years old?
What would happen if they found a galaxy that dated to older than 13.8 billion years old? How would this affect cosmology?
 
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What would happen if we found out that voodoo really worked? How would that affect physics?
 
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Jupiter60 said:
Summary: What would happen if they found a galaxy that was older than 13.8 billion years old?

What would happen if they found a galaxy that dated to older than 13.8 billion years old? How would this affect cosmology?
"They" would write a paper about it, and get the paper published in a peer-reviewed journal. At that point you would start a new thread with a link to that paper to start a discussion about it. I'll wait...

(Thread is closed until then)
 
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https://en.wikipedia.org/wiki/Recombination_(cosmology) Was a matter density right after the decoupling low enough to consider the vacuum as the actual vacuum, and not the medium through which the light propagates with the speed lower than ##({\epsilon_0\mu_0})^{-1/2}##? I'm asking this in context of the calculation of the observable universe radius, where the time integral of the inverse of the scale factor is multiplied by the constant speed of light ##c##.
The formal paper is here. The Rutgers University news has published a story about an image being closely examined at their New Brunswick campus. Here is an excerpt: Computer modeling of the gravitational lens by Keeton and Eid showed that the four visible foreground galaxies causing the gravitational bending couldn’t explain the details of the five-image pattern. Only with the addition of a large, invisible mass, in this case, a dark matter halo, could the model match the observations...
Hi, I’m pretty new to cosmology and I’m trying to get my head around the Big Bang and the potential infinite extent of the universe as a whole. There’s lots of misleading info out there but this forum and a few others have helped me and I just wanted to check I have the right idea. The Big Bang was the creation of space and time. At this instant t=0 space was infinite in size but the scale factor was zero. I’m picturing it (hopefully correctly) like an excel spreadsheet with infinite...

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