Out there in the cosmos there are billions of galaxies, but they’re not in random places wherever you look. They form on, and they’re connected by, long threads or filaments of hot gas.
That’s long been predicted by cosmological models, but for the first time these filaments have been directly observed by astronomers. In doing so, astronomers using the ESO’s Very Large Telescope (VLT) in Chile have revealed a “cosmic web” that shows a hitherto invisible population of billions of dwarf galaxies.
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