As galaxies age, some of their basic chemical elements can also show signs of aging. New surveys of the Milky Way found no such aging trend for silicon, which may mean the galaxy is more efficient at mixing its contents than previously thought, thereby masking the telltale signs of chemical aging.

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As galaxies age, some of their basic chemical elements can also show signs of aging. New surveys of the Milky Way found no such aging trend for silicon, which may mean the galaxy is more efficient at mixing its contents than previously thought, thereby masking the telltale signs of chemical aging.