The Missing Fuel: How Astronomers Investigate Galaxies That Stopped Making Stars A galaxy may glow brightly despite forming very few new stars. Much of its light may originate from an ageing stellar population formed billions of years ago, even though the conditions needed for further star formation have since changed. https://notebookgrid-economybrief530.blazingblog.com/43117569/don-t-fall-to-fermi-paradox-and-alien-life-blindly-read-this-article