Anonim

34 years of travel

Voyager 1

18 billion km

Voyager 1 would be entering interstellar space.

The location of the two Voyager spacecraft that are passing through the last region of the heliosphere. The Sun emits a continuous flow of charged particles (solar wind) that form a kind of bubble around the Solar System. The solar wind travels at supersonic speed until it overcomes the shock wave, generated by the motion of the Sun (and of our entire planetary system) around the nucleus of the Galaxy. This limit is called "termination shock". Voyager 1 passed it in December 2004, while its twin Voyager 2 passed it in August 2007. Beyond the termination shock is the so-called "heliosheath", shown in gray, which is the region where the solar wind suddenly decreases its speed . Beyond these two regions the space is dominated by the "interstellar medium" which is compressed by the motion of the Sun, giving rise to an arched structure called "bow shock". (NASA)

Deep Space Network

Voyager

Artistic illustration of the Voyager 1 probe. (NASA / JPL-Caltech)

Voyager 1

Voyager

Voyager 1

Voyager

team

Voyager 1