Scouts of outer planets. Journey of "Pioneers" and "Voyagers" from Earth to Neptune and beyond

In the book “Intelligence Schools of Planets: the Journey of“ Pioneers ”and“ Voyagers ”from the Earth to Neptune and further” Igor Lisov in exciting details sets out the history of preparation, planning, financing, launches and flights of “Pioneers” and “Voyagers” - spacecraft, mission which was the study of the planets of the external solar system. These expeditions made it possible to obtain incredibly valuable information about Jupiter, Saturn, Uranus and Neptune - heavenly bodies, the knowledge of mankind of which was previously very superficial. Two “Voyajeers” to this day are in flight: gradually losing power, they cease to give signals and go further from the Earth, beyond the limits of the solar system. These ships are never destined to go back, but on their board the Voyagers carry messages of earthlings to unearthly civilizations-in case such a meeting will someday take place