(93 points )if light is the fastest thing that travels how does the darkness get there first?

Darkness is just the Absence of light so it's technically always there

electromagnetic waves travel through space with vacuums. give me brainliest if right.

luster is not a good characteristic to use by itself because luster is the property of minerals that indicates how much the surface of a mineral reflects light. the luster of a mineral is affected by the brilliance of the light used to observe the mineral surface.