35 years after its momentous launch, Voyager 1 appears to have travelled beyond the influence of the Sun and exited the heliosphere.
Thirty-five years ago today, NASA's Voyager 1 spacecraft set off on its journey to interstellar space - and it's now teetering on the edge.
Our sun is moving through the Milky Way more slowly than thought, new data from NASA's Interstellar Boundary Explorer (IBEX) satellite shows.
After a 30 year journey, NASA's twin Voyager probes are about to leave the solar system and enter interstellar space.
The 'force field' shielding our solar system from cosmic rays has declined in intensity by 10 to 15 percent over the last six months.