The term "deep space" refers to the vast, uninhabited regions of outer space that are located beyond Earth's orbit. It is a region where there is little or no gravity from any celestial body and it includes interplanetary space, interstellar space, and even deep-space phenomena such as black holes and supernovae. Deep space is typically characterized by its emptiness - the distances between objects are vast, with millions of miles separating stars and planets from one another.