Why are galaxies important?

The other Galaxies are not important at all. Actually, as far as life on Earth and our Solar system is concerned, the other Galaxies are not important at all. Can disappear or even not existed without any consequences for us. read more

Best Answer: Fortunately, galaxies do not have any impact upon our existence. The importance of this is that if our Milky Way galaxy had merged with another major galaxy, it would end up as an elliptical galaxy instead of a spiral. Elliptical galaxies are older. Thus they contain stars with less metallicity. read more