The Voyager program comprises a set of spacecraft designed for interplanetary scientific exploration, initially focusing on studying the giant planets and the boundaries of the solar system. The missions successfully gathered extensive data regarding the composition, magnetic fields, and atmospheric dynamics of the target worlds. After executing their primary planetary flybys, the spacecraft continued outward, transmitting measurements of the heliosphere's structure and the local interstellar medium. This continuation allowed for unique observations of conditions beyond the influence of the Sun, providing critical data about the solar system's boundary with interstellar space.