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Neutrinos determined where galaxies formed in the early universe

Space 6 March 2020 By Leah Crane Neutrinos may be small, but in the early universe they were mightyScience Photo Library – VICTOR HABBICK VISIONS via GettyIn the early universe, neutrinos were king. These tiny particles interact with other matter so weakly that about 100 trillion of them pass through your body unnoticed every second,…



Space



6 March 2020

By Leah Crane

New Scientist Default Image

Neutrinos may be small, but in the early universe they were mighty

Science Photo Library – VICTOR HABBICK VISIONS via Getty

In the early universe, neutrinos were king. These tiny particles interact with other matter so weakly that about 100 trillion of them pass through your body unnoticed every second, but they may have had enormous effects on the structure of matter just after the big bang.

In the first few thousand years of the universe, before the formation of galaxies or stars, very small ripples of matter started to form, says Francis-Yan Cyr-Racine at the University of New Mexico. …

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