this post was submitted on 14 Jun 2023
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Space

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Cover author: Michał Kałużny http://astrofotografia.pl/

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In the early universe, the gas between stars and galaxies was opaque – energetic starlight could not penetrate it. But 1 billion years after the big bang, the gas had become completely transparent. Why? New data from NASA’s James Webb Space Telescope has pinpointed the reason.

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