For about 5 months, experts tried every way to fix the error and restore communication for Voyager 1, a ship that had been operating for nearly half a century.
Voyager 2 spacecraft left Earth in 1977, until December 10, 2018, it officially left the Solar System, about 18 billion km from our planet.
Uranus has a self-rotating axis that is almost parallel to the orbital plane and moves very slowly around the Sun.
US scientists on September 12 confirmed NASA's Voyager 1 probe was out of the solar system, marking the first time a human spacecraft has gone so far.
The Voyager 2 spacecraft is an interplanetary unmanned spacecraft launched on August 20, 1977