Interstellar Probe Explorer (ISP) is also the name of a new NASA robotic, one-way mission into the local interstellar medium over 50 years currently being studied by the Johns Hopkins Applied Physics Laboratory. Building on the experience of the Voyager and New Horizons spacecraft, it will fly the first dedicated instruments designed to explore the environment of the nearby Milky Way. Traveling beyond the Sun's sphere of influence, it would be NASA's first dedicated mission to venture into the space between our star and other potentially habitable planetary systems.