Add Yahoo as a preferred source to see more of our stories on Google. Voyager 2 launched into the solar system 49 years ago on August 20, 1977. Together with Voyager 1, the two probes are now billions ...

Buzz Lightyear's 'to infinity and beyond' in Toy Story was meant as an impossible boast. Voyager, however, has given it unexpected meaning -- not because it will ever reach infinity, but because for ...