Wonders of Astronomy News Staff Thu, 10/29/2026 - 07:05 In-page image(s) X Body Now 49 years into its journey, NASA's Voyager 1, launched on September 5, 1977, spent 35 years of that travel in our solar system before it crossed into the heliopause in 2012.

This is the theoretical outer boundary of the Heliosphere, where the outward flow of our Sun's solar wind is finally stopped by the interstellar pressure of our galaxy.

Voyager 1 has now traveled more than 25 billion kilometers (15,534,279,805. 933 miles) from Earth in its journey through the stars.