Tag Archive for: big bang

Big Bang, Infinity, and the Universe’s Shape Explained
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The Big Bang was not an explosion from a point in space. It was the appearance of a singularity, a moment where spacetime itself breaks down and cannot…

Did the Big Bang Have a Center? The Physics Explained
The Big Bang did not happen at a single point in space, so it has no center. Standard cosmological models based on general relativity treat the Big Bang…

Big Bang Models: Expansion, Dark Energy, Inflation
Big Bang and expansion (no inflation, no dark energy)
Empty-universe solution (FLRW)
Einstein's General Relativity allows a solution (the FLRW metric)…

LightCone8 Tutorial Part II – Charts
Part I dealt with the basic user interface of LightCone8. This part of the tutorial is about potentially useful cosmological insights to be gained from…

Are Galaxy Redshifts Cosmological? The Evidence Explained
Galaxy and quasar redshifts are classified as cosmological, not "intrinsic," because they match predictions from general relativity's expanding-universe…

LightCone8 Tutorial Part I
LightCone 8 is a versatile tabulating/charting cosmological calculator, useful for understanding the expansion history of the universe (and even some future…

Why the Big Bang Wasn’t a Black Hole: Cosmology Explained
The Big Bang was not a black hole because it happened everywhere in space at once rather than at a single point, and because the near-perfect homogeneity…

Blockworld and its Foundational Implications: General Relativity and the Big Bang
In parts 1 and 2 of this 5-part Insights series, I explained the blockworld (BW) implication of special relativity (SR). Geroch sums up the…

The Balloon Analogy Explained: Cosmic Expansion Without a Center
The balloon analogy uses pennies glued to an inflating balloon to show two ideas from modern cosmology: that unbound regions of the universe expand roughly…
