Cosmic Neutrino Background ·
Relic Sea
un
seel
.com · decoupling at 1 second · free-streaming · 1.95 K
Age
~0 s
T_ν
10¹⁰ K
Beat
hook
Hot plasma (t < 1 s)
Relic neutrinos
CMB shell (380,000 yr)
Cooled relic sea
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.com · Cosmic Neutrino Background