The first was the famous Comet C/2023 A3 Tsuchinshan–ATLAS whose dust tail of several million miles graced skies all over the ...
Roughly 400,000 years after the Big Bang, the universe cooled just enough to allow photons to escape from the primordial ...
A 3D map of our cosmic neighborhood has revealed hot and cold regions as well as an "escape tunnel" from our local bubble.
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