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The expanding universe.
MODE:
~
8 minute
audio walk.
Big Bang:
The expanding universe.
Story mode.
Eight key ideas and takeaways.
Finally, 4 frequently asked “questions.”
1. Our first story.
Subject: Expanding Universe.
We do not know the ultimate fate of the universe, but the leading ideas are that it expands forever, collapses and starts over, or ends in something more extreme.
Now to clarify.
Most current models lean toward a universe that keeps expanding and grows colder, darker, and more diffuse over immense spans of time. That view is driven by evidence that expansion is accelerating, including supernova measurements, the cosmic microwave background, and large-scale galaxy structure.
That Big Bang Article,
was first published on TST 2 years ago.
2. Now for our second story.
Subject: Big Bang Singularity.
- Philosophers: "It’s all speculation.".
- Scientists: "We’re working on it!".
Physicists often talk about the idea that the universe exploded from nothing in a singularity, that idea is more philosophical than scientic. The universe’s expansion is scientific, the singularity itself remains speculative.
Briefly.
The expansion of the universe is solid science. The singularity is not. It marks the point where our equations stop working, not where we suddenly know what “began everything.” Calling that boundary scientific certainty confuses mathematical breakdown with physical reality. Good thinking separates evidence from speculation without pretending speculation is failure.
That Big Bang FAQ,
was first published on TST 2 years ago.
3. Tidbit number three, a quote.
Subject: Relativity.
In shaping modern cosmology, Galileo articulated the relativity principle in 1632, Newton made gravity universal in 1687, and Einstein revealed gravity as the curvature of spacetime in 1915.
In simple terms.
Galileo Galilei showed that constant motion is undetectable. That physics works the same on a smooth ship or solid ground. Isaac Newton made gravity universal. Centuries later, Albert Einstein extended Galileo’s insight. Einstein revealed that space and time are intertwined. Energy is matter, and gravity is the very fabric of spacetime itself.
That Big Bang FAQ,
was first published on TST 1 year ago.
4. Tidbit number four, another quote.
Subject: Expanding Universe.
ΛCDM remains the leading cosmological model because our current best measurements indicate gravity is not strong enough to stop the universe’s expansion.
Now, to be clear.
The Lambda model is the leading model because the evidence points that way: the cosmic microwave background fits the model extremely well, distant Type Ia supernovae shows expansion accelerating, and large-scale galaxy patterns. It is still speculative because of major mysteries like dark matter and dark energy.
That Big Bang Article,
was first published on TST 2 years ago.
“Done.”
Think of tidbits as intellectual scaffolding: modest on their own, essential to the strength of the whole.
Rather than chasing completeness, each piece aims for clarity at the time it is written.
Refresh for another set.
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(c) 2025-2026 TouchstoneTruth.
Writing and coding by Michael Alan Prestwood.
(c) 2025-2026 TouchstoneTruth.
Writing and coding by Michael Alan Prestwood.
