What Kills Galaxies? Deep Space Strangulation

It’s a who-dunit on a cosmic scale: What is killing the galaxies? Even they, bright beacons of the skies, meet their eventual demise. New analysis from a group of astronomers points to the cause. Most galaxies cease producing new stars as their fuel runs low and they suffer a slow suffocation. The study, released today in Nature, challenges the traditional view that star formation stops suddenly.

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