Darkness, in the context of the absence of light, does not travel in the same way that light does. Darkness is not a physical entity or wave that moves through space.
Light is a form of electromagnetic radiation that travels in a straight line at a constant speed of approximately 186,282 miles per second (299,792 kilometers per second) in a vacuum. When light is blocked or absorbed by an object, such as a wall or a shadow, it creates an area where light does not reach, resulting in a perception of darkness in that region.
The concept of darkness is the absence of light or the lack of illumination. It does not have a speed or velocity because it is not a physical phenomenon that propagates through space like light does. Instead, darkness is simply the absence of electromagnetic radiation in the visible spectrum that our eyes perceive as light.
So, darkness itself does not travel, but it is a relative term used to describe the absence of light in a particular area.