At the dawn of the universe, just hundreds of millions of years after the Big Bang, the first galaxies began to form. Inside these young systems, stars were born from vast reserves of cold gas, slowly building the cosmic structures we observe today. Understanding the nature of this gas is fundamental to explaining how the early galactic systems grew. However, directly tracking its neutral component has been one of the greatest challenges of mode…
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At the dawn of the universe, just hundreds of millions of years after the Big Bang, the first galaxies began to form. Inside these young systems, stars were born from vast reserves of cold gas, slowly building the cosmic structures we observe today. Understanding the nature of this gas is fundamental to explaining how the early galactic systems grew. However, directly tracking its neutral component has been one of the greatest challenges of mode…