How can we avoid injuries in school or community when engaging in physical activities?
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Mass of the milkyway galaxy :
The magnitude of the mass of the Milky Way galaxy =
Galaxies do not appear to have sufficient matter inside them to keep shaping modern stars at the rates that they do. Presently, astronomers have caught a universe within the act of reusing fabric that it already tossed out, which may clarify the discrepancy. New perceptions give the primary coordinate evidence of gas streaming into distant galaxies that are effectively making infant stars, offering support for the "galactic recycling" theory.
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