The American spacecraft exits the solar system

International scientists claim Voyager 1, the US spacecraft flying into space since 1977, flew over the boundaries of the Solar System.

Scientists' statement appeared in an article in Geophysical Research Letters. According to the article, Voyager 1 is more than 18 billion kilometers from Earth. The spacecraft detects a marked change in the concentration of two charged particles in its surroundings from December 25, 2012. A type of charged particle exists inside the solar system, while one exists outside the system (ie it belongs to interstellar space).

The Voyager 1. illustration is flying out of the solar system at 17km / s.

"The concentration of charged particles in the solar system is reduced by 1% compared to before, while the concentration of charged particles from interstellar space nearly doubled , " astronomer Bill Webber, professor emeritus of Dai Study New Mexico, speak. Webber is the head of the Voyager 1 data analysis team.

The amount of charged particles is one of the three signals that NASA uses to calculate the time the ship crosses the boundary of the solar system. The sharp increase in the number of particles means that the ship is about to fly into interstellar space.

However, Webber and his colleagues have not concluded that Voyager 1 has entered the interstellar space.

Voyager 1 was launched on September 5, 1977. Voyager 2, another spacecraft, flew to space on August 20 the same year. The initial mission of the two ships was to explore the Jupiter, Tho, Hai Vuong and Thien Vuong stars. They completed this mission in 1989. They then flew towards the center of the Milky Way in two directions. Their nuclear reactors will stop producing electricity for another 10 to 15 years. After the reactor ceased operation, the electronic equipment and broadcasting of the two ships will 'die'.