How come space is black and the sky is blue?
Well, the sky is blue because that’s the color that the particles in the air break up the light waves, the rays of light coming at the Earth from the Sun. But in space, there is no air, and thus no particles, that can break up the light in the same way. That’s why it’s called space. So the light waves travel through space and once they hit a planet or anything made up of particles (which is anything but space), they’re broken up into different colors.