NASA'S Voyager Edges Closer to the Starss

The United States' Voyager 1 spacecraft is close to becoming the first human-made object to travel between the stars.

The spacecraft, which is now more than 11 billion miles from the sun, has entered the so-called "magnetic highway," showing scientists two of the three signs they believe will confirm it has entered interstellar space: the presence of charged particles from the sun shooting out into space; and cosmic rays from outside coming into the heliosphere, which can be thought of as the region of space dominated by the sun.

This artist's concept shows NASA's two Voyager spacecraft exploring a turbulent region of space known as the "heliosheath," the outer shell of the bubble of charged particles around our sun.

The third sign, an abrupt change in the direction of the magnetic field, would indicate the presence of the