Add Yahoo as a preferred source to see more of our stories on Google. An artist's concept shows Voyager 1 entering interstellar space, or the space between stars. - NASA/JPL-Caltech Voyager 1, NASA’s ...

In late 2026, a spacecraft launched in the 1970s will reach a distance from our planet that once belonged purely to science fiction: one full light-day from Earth. When Voyager 1 crosses that ...