Space
First stars’ light seen through extragalactic fog
Like headlights piercing the gloom, the bright cores of distant active galaxies have helped us glimpse how the first stars formed
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Like headlights piercing the gloom, the bright cores of distant active galaxies have helped us glimpse how the first stars formed
The proportion of lithium in a satellite galaxy of the Milky Way is just shy of what existed moments after the big bang, posing a problem for our models