The plan is audacious: a wormhole has appeared near Saturn, placed there by unknown beings (later referred to as "Them"). This wormhole leads to a distant galaxy containing potentially habitable planets. Cooper pilots the Endurance spacecraft with a crew including Brand’s daughter, Amelia (Anne Hathaway), through the wormhole on a mission to save the human race.
In astronomy, the "interstellar medium" (ISM) refers to the matter and radiation that exists in the space between the star systems within a galaxy. Interstellar