Physics
We see neutrinos from the big bang in the way galaxies cluster
Just after the big bang, waves of neutrinos and other matter raced across the cosmos. Those neutrinos reached forward in time to dictate where galaxies form now
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Just after the big bang, waves of neutrinos and other matter raced across the cosmos. Those neutrinos reached forward in time to dictate where galaxies form now
Pions are particles that usually decay very quickly. But right after the big bang, they could have made stars that last long enough for us to detect now