Interstellar probes are spacecraft designed to travel beyond our solar system to study other stars and their planetary systems. These missions aim to gather data about cosmic phenomena, such as the composition of interstellar space and the potential for life on other planets. Notable examples include the Voyager 1 and Voyager 2 probes, which have already entered interstellar space. These probes are equipped with scientific instruments to measure magnetic fields, cosmic rays, and other environmental factors. They help scientists understand the conditions of space beyond our solar system and provide insights into the formation and evolution of the Milky Way galaxy.