An artist's concept which shows NASA's Voyager spacecraft against a backdrop of stars.

NASA/JPL-Caltech

Voyager 1 and 2 are exploring the mysterious region between stars, called interstellar space. NASA launched the twin probes in 1977 for a five-year mission to trek across the solar system. It should take Voyager 1 40,000 years to reach another star, according to the space agency.

Some 14.8 billion miles from Earth, the Voyager 1 probe is cruising through the blackness of the interstellar...

Continue Reading It should take another 300 years for NASA's Voyager 1 probe to reach the most distant region of our solar system. Until then, it's cruising through the void between the stars.