Voyager near Solar System's edge

 

Voyager is approaching the edge of the bubble of charged particles the Sun has thrown out into space

Voyager 1, the most distant spacecraft from Earth, has reached a new milestone in its quest to leave the Solar System.

Now 17.4bn km (10.8bn miles) from home, the veteran probe has detected a distinct change in the flow of particles that surround it.
These particles, which emanate from the Sun, are no longer travelling outwards but are moving sideways.
It means Voyager must be very close to making the jump to interstellar space - the space between the stars.

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