Far out cosmology: furthest and one of the oldest galaxies (Introduction)

by David Turell , Tuesday, December 22, 2020, 22:30 (1430 days ago) @ David Turell

Over 13 billion plus light years away:

https://www.scientificamerican.com/article/scientists-think-this-may-be-the-farthest-ga...

"The galaxy GN-z11 might not have a flashy name, but it appears to be the most distant and oldest galaxy ever detected, scientists have found.

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“From previous studies, the galaxy GN-z11 seems to be the farthest detectable galaxy from us, at 13.4 billion light-years, or 134 nonillion kilometers (that’s 134 followed by 30 zeros),” Kashikawa said in a statement. “But measuring and verifying such a distance is not an easy task.”

"'To determine how far GN-z11 is from us here on planet Earth, Kashikawa’s team studied the galaxy’s redshift—how much its light has stretched out, or shifted toward the red end of the spectrum. In general, the farther away a cosmic object is from us on Earth, the more redshifted its light will be.

"Additionally, the team looked at GN-z11’s emission lines—observable, chemical signatures in the light coming from cosmic objects."

Comment: At 13.4 billion years old it was born just .38 billion years after the Big Bang. A short while before the Milky Way when thinking in billions