Suppose that stars evolved without losing mass—that once matter was incorporated into a star, it remained there forever. how would the appearance of the galaxy be different from what it is now? would there be population i and population ii stars? what other differences would there be?

the inner core.

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klicker

as we know our atmosphere or air have different levels. every level has other gasses, and every gas has another permeability. when the light comes from lower permeability to higher permeability, it changes its direction. so that means that when the light comes from the moon to the earth, it changes it's direction many more times. it basically means that the shape of the light part of the moon is changed on the earth.

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