James Webb spots super old, massive galaxies that shouldn’t exist

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James Webb spots super old, massive galaxies that shouldn’t exist

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Three new candidate galaxies, which look like fuzzy red dots, discovered in images collected by NASA's James Webb Spacce Telescope. One of these galaxies, left, may have contained as many stars as the modern-day Milky Way, but was 30 times more compact in size. Credits: NASA, ESA, CSA, I. Labbe (Swinburne University of Technology). Image processing: G. Brammer (Niels Bohr Institute’s Cosmic Dawn Center at the University of Copenhagen).

n a new study, an international team of astrophysicists has discovered several mysterious objects hiding in images from the James Webb Space Telescope: six potential galaxies that emerged so early in the universe’s history and are so massive they should not be possible under current cosmological theory.

Each of the candidate galaxies may have existed at the dawn of the universe roughly 500 to 700 million years after the Big Bang, or more than 13 billion years ago. They’re also gigantic, containing almost as many stars as the modern-day Milky Way Galaxy.

“It’s bananas,” said Erica Nelson, co-author of the new research and assistant professor of astrophysics at CU Boulder. “You just don’t expect the early universe to be able to organize itself that quickly. These galaxies should not have had time to form.”

Nelson and her colleagues, including first author Ivo Labbé of the Swinburne University of Technology in Australia, published their results Feb. 22 in the journal Nature.

Source and more: https://www.colorado.edu/today/2023...ots-super-old-massive-galaxies-shouldnt-exist




TLDR:

JWT found huge galaxies which are too old, formed only 500-1000 million years after big-bang.
Current cosmology theories are challenged once again because it is just not enough time to develop a galaxy.
Now, these space objects might not be galaxies. Investigations still going on, stay tuned.
 
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