The Big Bang Is in Your Living Room Right Now!!

Right now, in your house, there is an echo of the Big Bang.
Turn on an old analogue television and tune it between channels.
Roughly 1% of the static you see is actual cosmic microwave
background radiation — light that has been travelling toward
you for 13.8 billion years.
The Big Bang is not just a theory. It is one of the most
thoroughly tested ideas in all of science, with direct
observational evidence accurate to four decimal places.
In this video we trace the complete story — from the moment
when everything in the universe was compressed into a region
smaller than a hydrogen atom, through the first three minutes
when nucleosynthesis built the hydrogen and helium that
everything else is made of, through the accidental Nobel
Prize-winning discovery of the cosmic microwave background
at Bell Laboratories in 1964, to the formation of the first
stars and galaxies, and finally to the open questions that
even our best physics cannot answer: what came before,
and where is the universe heading?
⏱ Chapters
0:00 The echo of the Big Bang in your living room
0:25 Why the Big Bang is not just a theory
0:52 Everything smaller than a hydrogen atom
1:22 Space itself expanding — not into anything
1:54 Hubble's 1929 discovery changed cosmology forever
2:22 Redshift and the expanding universe
2:50 Run the clock backward — the singularity
3:15 What we cannot know about t = 0
3:48 Inflation — the universe expands by 10²⁶ in 10⁻³² seconds
4:15 The hot particle soup after inflation
4:48 The first three minutes built the periodic table
5:22 Verifying Big Bang nucleosynthesis
5:48 A mysterious hiss from every direction — New Jersey, 1964
6:25 Pigeons, antennas, and an accidental Nobel Prize
6:58 When the universe became transparent
7:25 The cosmic microwave background map
7:52 The cosmic dark ages and the first stars
8:18 Generations of stars building every element
8:45 What the numbers actually tell us
9:00 Before the Big Bang — the question physics cannot answer
9:25 Subscribe to Knowable

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📚 Topics covered: Big Bang explained, cosmic microwave
background, CMB discovery Penzias Wilson, Big Bang
nucleosynthesis, cosmic inflation, Hubble redshift, age of
the universe, what came before the Big Bang, heat death of
the universe, primordial hydrogen helium, Planck satellite
CMB map, Holmdel Horn Antenna Bell Labs, t=0 singularity,
first stars universe, cosmic dark ages, Hubble constant.

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