Voyager Treks Into Interstellar Space, An Unexpected Frontier

Voyager Treks Into Interstellar Space, An Unexpected Frontier

NASA/JPL-Caltech

This artist's concept shows the general locations of NASA's two Voyager spacecraft. Voyager 1, top, has sailed beyond our solar bubble into interstellar space, the space between stars. Its environment still feels the solar influence. Voyager 2, bottom, is still exploring the outer layer of the solar bubble.