There is a debate going on about Ernesto Laclau's argument that
any repetition that is governed by a structural law of successions is space
But what does he actually mean by that?
Without being aware of the specific controversies that this brings up, I take his statement to be a definition of the mathematical notion of "space". For example: real numbers space, prime numbers space, Cartesian space, "the consumer space" vs "the business space", etc.
Note that this is only sometimes associated with physical space (as in, "more space in your living room / space in your closet") and only sometimes with outer space (as in, space travel / space ship).