Helge Kragh

2 months ago | daily.jstor.org | Elizabeth Quill |Helge Kragh |Adam Mann |Fulvio Melia

The icon indicates free access to the linked research on JSTOR. For millions of years following the Big Bang, after the universe’s roiling soup of particles had cooled, the cosmos was a dark and boring place. There were no stars to make light. No familiar swirls of galaxies. Certainly no planets. And the entire universe was shrouded in neutral hydrogen gas. Then, perhaps 100 million years or so in, everything started to change.