The way galaxies cluster is a window into the behaviour of the first neutrinos ESA/Hubble, NASA, HST Frontier Fields
Neutrinos that filled the universe a mere second after the big bang make up a third “dark” component of the cosmos, alongside dark matter and dark energy. For the first time, cosmologists have detected the influence of these particles on the large-scale structure of galaxies.
Moments after the big bang, our universe was a seething sea of interacting particles, packed together and constantly bouncing off of one another. Among the first to break free from this dense plasma as the…
