NASA: Voyager Reaches Interstellar Space Frontier

The Voyager space exploration program - which originally sent two spacecraft to explore Jupiter and Saturn - has celebrated 35 years since its launch. And, according to NASA, almost as a way of celebrating the feat, the number 1 spacecraft has entered a region far from the Solar System, which may be the last frontier for the mission to reach interstellar space.

According to the publication, Voyager 1 has reached a region that, due to the alignment between the solar magnetic field and the interstellar magnetic field, is called the magnetic higway . This alignment allows charged particles from the heliosphere - a kind of bubble formed by the solar magnetic field - to escape into interstellar space and the particles in that space to penetrate.

NASA believes that once the spacecraft crosses this barrier, the direction of the magnetic field will likely change, allowing us to determine the exact moment Voyager enters interstellar space. Voyager 1 is the man-made object that is farthest from Earth - having traveled nearly 18 billion kilometers - and can enter interstellar space from a few months to a couple of years.