[ExI] Massive galaxies grew in the early universe

[John Grigg]

BillK wrote:
"Most galaxies formed when the universe was still very young.
Our own galaxy, for example, likely started forming 13.6 billion years
ago, in our 13.8 billion-year-old universe.

When the universe was only ten percent of its current age (1-1.5
billion years after the Big Bang), most of the galaxies experienced a
“growth spurt”."

This gets me to thinking about the possible existence of early progenitor
"elder god" races who have since died out or disappeared to other realms.

Oh, and speaking of great passages of time and biological life... I read
the book years ago, and plan to see the film soon...  :  )

https://www.youtube.com/watch?v=tUzeN39Oc5w

https://en.wikipedia.org/wiki/Last_and_First_Men

https://www.rottentomatoes.com/m/last_and_first_men



On Wed, Nov 11, 2020 at 5:43 AM BillK via extropy-chat <
extropy-chat at lists.extropy.org> wrote:

> This research might help Spike's worries about gravitational waves
> from the early universe.
>
> <
> https://knowridge.com/2020/10/massive-galaxies-were-surprisingly-mature-in-the-early-universe-says-study/
> >
>
> Quote:
> Massive galaxies were surprisingly mature in the early universe, says
> study.
> By National Radio Astronomy Observatory       October 29, 2020
>
> Massive galaxies were already much more mature in the early universe
> than previously expected.
> This was shown by an international team of astronomers who studied 118
> distant galaxies with the Atacama Large Millimeter/submillimeter Array
> (ALMA).
>
> Most galaxies formed when the universe was still very young.
> Our own galaxy, for example, likely started forming 13.6 billion years
> ago, in our 13.8 billion-year-old universe.
>
> When the universe was only ten percent of its current age (1-1.5
> billion years after the Big Bang), most of the galaxies experienced a
> “growth spurt”.
> During this time, they built up most of their stellar mass and other
> properties, such as dust, heavy element content, and spiral-disk
> shapes, that we see in today’s galaxies.
> ------------
>
> BillK
>
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>
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