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The universe including astronomy, physics, and structure.
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8 minute
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It’s time to explore key ideas and takeaways.
First up. 2 “tales” from history.
Our first story.
From History: 13.4 Billion Years Ago
Subject: Expanding Universe.
Verified. Empirically supported and rationally deduced.
Looked at differently.
Galaxies formed early in cosmic history, within a few hundred million years of the Big Bang. This shows that structure emerged quickly from an initially simple universe. Observations confirm that gravity wasted little time turning primordial gas into organized systems, even before features we now consider typical. Such as central supermassive black holes commonly found in galaxies.
That Cosmology Story,
was first published on TST 2 years ago.
Now for our second story.
From History: 1848
Subject: Light Waves.
Now, to be clear.
The Doppler effect was extended from sound to light when astronomers noticed that starlight shifts in frequency, revealing stellar motion through subtle changes in color.
That Cosmology Story,
was first published on TST 2 years ago.
Next up. Two “quotes.”
Tidbit number three, the first of two quotes.
Subject: We Are Stardust.
- Carl Sagan.
- circa 1980.
Cosmology < Science
Put simply.
Carl Sagan reminds us that we are intimately connected to the universe. The particles that form our bodies are borrowed from a cosmic pool of just 17 particles and four forces. Even more humbling, the molecules within us were forged in the hearts of stars, linking us directly to the vast cosmos that surrounds us.
That Cosmology Quote,
was first published on TST 1 year ago.
Tidbit number four, another quote.
Subject: Impermanence.
- Heraclitus.
- 500 BCE.
Change is the only form of permanence that exists.
Seen another way.
Heraclitus’ claim that “everything is in flux” captures a deep truth shared by both metaphysics and classical physics. The world appears stable only because change often happens gradually. Beneath every solid object, fixed identity, and steady law lies continuous motion, transformation, and becoming. What endures is not stillness, but patterned change.
That Cosmology Quote,
was first published on TST 2 days ago.
Finally, 4 frequently asked “questions.”
Now it is time for tidbit number five. The first of four questions.
Subject: The Expanding Universe.
Our galaxy is part of the Local Group, over 50 galaxies, gravitationally bound, forever.
So, to put it simply.
Every star you see at night belongs to the Milky Way — some can see a few of the closest galaxies. All gravitationally bound and unaffected by cosmic expansion. For centuries, humans assumed the night sky was eternal and unchanging. Modern cosmology reveals a subtler truth: while the universe expands, gravity preserves the stars.
That Cosmology FAQ,
was first published on TST 11 months ago.
Tidbit FAQ number six.
Subject: Fermi Paradox.
The Fermi Paradox is the common framework for thinking about the odds of alien life, but we need more data before it can become accurate enough to be useful.
From another angle.
The Fermi Paradox isn’t about alien silence—it’s about our impatience and limited perspective. The universe operates on scales of time and space far beyond human comprehension, reminding us that the search for extraterrestrial life is a marathon, not a sprint.
That Cosmology Article,
was first published on TST 1 year ago.
“Done.” Refresh for another set.
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(c) 2025 TouchstoneTruth.
Writing and coding by Michael Alan Prestwood.
(c) 2025 TouchstoneTruth.
Writing and coding by Michael Alan Prestwood.
