NASA
NASA has launched over 500 missions. Over 150 missions had humans on board. Such manned missions are the most expensive and make the most news but the majority of launches are for space exploration, science, and other purposes that do not need people. NASA spacecraft such as Cassini-Huygens and the Voyager program have visited every planet in the Solar System. Four NASA spacecraft have left the Solar System, Voyager 1, Voyager 2, Pioneer 10 and Pioneer 11, while the fifth, a New Horizons spacecraft is estimated to exit the solar system by 2048. As of 2022 Voyager 1 is 23,447,000,000 (23.4 billion) kilometers away from Earth and Voyager 2 was at a distance 19,474,000,000 (19.4 billion) kilometres away from Earth.