
Space is a difficult word to pin down. Colloquially, it probably conjures images of stars and supernovae, Jupiter and Saturn and Mars, and the shuttle hanging against the backdrop of clouds and the horn of Africa. It is—or was—the Space Age, when we were supposed to go forth and colonize the stars. It didn’t work out that way, but our association of the word with “not of Earth” continues. Space can also refer to a…