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  New research shows that during the early universe cosmic filaments ferried cold gas and embryonic, node-shaped galaxies to a dark matter halo, where it all clumped together to form massive galaxies. The larger the galaxy, the more cold gas it needs to coalesce and to grow from a source of cold molecular gases totaling as much as 100 billion times the mass of our sun. “Where,” asked University of Iowa astronomers in a new study, “did these early, super-sized galaxies get that much cold gas when they were hemmed in by hotter surroundings?” Dark-Matter Halo Reservoir New observational evidence revealed that cold gas pipelines that knifed through the hot atmosphere in the dark matter halo of an early massive galaxy, supplying the materials for the galaxy to form stars. The scientists studied a gaseous region surrounding a previously unstudied, massive galaxy formed when the universe was about 2.5 billion years old, or just 20% of its present age. It took the team five year

University of iowaUnited statesHai fuMax goldbergIowa department of physicsAtacama largeSubmillimeter arrayGreat conjunctionAstrophysical journalDaily galaxyPlanet earthபல்கலைக்கழகம் ஆஃப் ஐயுவாஒன்றுபட்டது மாநிலங்களில்ஹாய் ஃபூஅதிகபட்சம் கோல்ட்பர்க்ஐயுவா துறை ஆஃப் இயற்பியல்