NASA’s Hubble Space Telescope is creating a road map for the two Voyager spacecraft, that will travel through unexplored territories beyond our solar system, by measuring the material along the probes’ future trajectories. Even after the Voyagers run out of electrical power and are unable to send back new data, which may happen in about a decade, astronomers can use Hubble observations to characterise the environment of through which these silent ambassadors will glide.