Aging stars pollute their surroundings as th … Posted on October 25, 2019 by mikee Aging stars pollute their surroundings as they burn, but galaxies recycle! The cloud of dust and gas surrounding a galaxy absorbs byproducts and pushes them back in, fueling the formation of new stars. About the process & a mission set to observe it: https://go.nasa.gov/31MO2h9