As galaxies move away from our galaxy, a shift on the electromagnetic spectrum is noticed. This is called a

Redshift and blueshift describe how light shifts toward shorter or longer wavelengths as objects in space (such as stars or galaxies) move closer or farther away from us. When an object moves away from us, the light is shifted to the red end of the spectrum, as its wavelengths get longer. Hope this helps!

from the conditions of the working class in england by friedrich engels,the main idea is :

why

do

all

legends

die

( xxxtentacion , mac miller , lil peep , 2 pac )