Spiral Arms and Bars are Galactic Fuel Pumps for Star Formation
Illustrative image Astronomers thought that early galaxies were messy, clumpy, and turbulent from mergers. That means their gas was all stirred up. So what could explain the rapid star formation during the Cosmic Noon? New research shows that galaxies had well-ordered morphologies earlier than thought, and that their spiral arms and bars…
Source：Universe Today
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