Spacecraft Voyager 1, launched in 1977 to explore planets that exist beyond the asteroid belt, like Jupiter, Saturn, Uranus, and Neptune, have now passed a new area on its way out of the Solar System.

Spacecraft Voyager 1, launched in 1977 to explore planets that exist beyond the asteroid belt, like Jupiter, Saturn, Uranus, and Neptune, have now passed a new area on its way out of the Solar System.

This was revealed by two changes in environmental conditions are very different space and interconnected, which is detected by the vehicle at the location within more than 18 billion miles from Earth on August 25, 2012 last.

Voyager 1 satellite captures a drastic change in the levels of radiation, where the radiation comes from the environment in the solar system and the other came from interstellar space.

Bill Webber, astronomer at New Mexico State University in Mexico, said the heliosphere, Voyager 1 detected particles in the solar system declined less than 1 percent of the detected previously. While interstellar space radiation increased almost two-fold.

However, researchers do not claim that Voyager 1 was in interstellar space, a space in space are no longer influenced by the effects of the sun.

Edward Stone, a researcher involved in the Voyager project, said it was necessary additional evidence indicating Voyager has left the solar system.

"The change in direction of the magnetic field is the last important indicator that indicates that Voyager 1 has reached interstellar space. Until now it has not been observed to change direction, "he explained.

Researchers suspect that Voyager 1 is now likely to be in the border region between the heliosphere and interstellar space that has never been known before.

"This vehicle is outside the heliosphere," said Webber, who told Reuters on Wednesday (20/03/2013). "Everything that we measure is different and interesting," he added.

In December, Voyager has reached an area called the magnetic highway, where the magnetic field from the Sun's magnetic field is connected to the rest of interstellar space.

"We believe that this is the last step of our journey toward interstellar space. This is expected in a few months or a few years, "said Stone.