No, there is no such thing as the "speed of dark." The term "dark" typically refers to the absence or reduction of light. It does not have a speed associated with it because darkness itself is not a physical entity that propagates or moves.
The speed of light, denoted by the symbol 'c,' is a fundamental constant in physics and represents the maximum speed at which information, energy, or any physical influence can travel through space. It plays a crucial role in our understanding of the universe, as described by theories such as Einstein's theory of relativity.
Darkness, on the other hand, is the absence of light or the reduction in its intensity. It is not an entity that can travel or propagate. Instead, it is the result of light not reaching a particular area or being blocked by an object.
It's worth noting that in some contexts, such as in astronomy and cosmology, the term "dark" is used to describe certain phenomena or substances that are not directly observable, such as dark matter and dark energy. However, these terms refer to hypothetical concepts that are different from the absence of light, and they do not have a speed associated with them in the same way that light does.