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What is the average time for dust discharged from a supernova to be reconsolidated in part or whole to form a new start?

Gary Jewell, Creston, California
Supernova-1987A
A dust grain ejected when a massive star explodes as a supernova can follow a few different paths. One possibility is that it will leave its host galaxy entirely as part of a galactic wind. Nearly half of all grains in the Milky Way today may suffer this fate. Some of these grains will be destroyed in our galaxy’s hot halo and some will . . .

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