Here's why:
* Noun: A noun is a word that names a person, place, thing, or idea. "Void" in this context represents a concept of emptiness or nothingness.
Let's look at an example:
"The spaceship drifted in the void of space."
In this sentence, "void" refers to the emptiness of space.
Note: "Void" can also be used as an adjective meaning "empty" or "null," but in the phrase "in void" it's clearly acting as a noun.