Voyager 2 probe entering interstellar space
The Voyager 2 spacecraft, which began its mission in 1977, has been explored the solar system for 40 years. This is the only probe that has studied Neptune and Uranus. At the end of its mission, the device flew to the border of the solar system. In December of this year, NASA reported that a month earlier, Voyager 2 had entered interstellar space becoming the second device to leave the solar system. The first interstellar traveler is the Voyager 1 spacecraft.