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Most normal matter in the universe isn't found in planets, stars or galaxies – an astronomer explains where it's distributed
But the Big Bang theory predicts that about 5% of the universe's contents should be atoms made of protons, neutrons and ...
Harvard's Avi Loeb reveals shocking anomalies in comet 3I/ATLAS, from sunward jets to 'industrial' alloys. Could this interstellar visitor be more than just ice?
Is 3I/ATLAS an alien probe? Breakthrough Listen uses the Green Bank Telescope to search for technosignatures as the ...
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