Summary: Without question, the Voyager 1 and 2 spacecraft are among the most successful scientific expeditions in history. First launched in 1977, and designed to last about five years, they are both still communicating with earth 40 years later.
Summary: Without question, the Voyager 1 and 2 spacecraft are among the most successful scientific expeditions in history. First launched in 1977, and designed to last about five years, they are both still communicating with earth 40 years later.