40 Years in Space – NASA’s Voyager 1 and 2

PICT - Voyager Spacecraft

Tuesday marks the 40th anniversary of the launch of NASA's Voyager 1 space probe. A companion spacecraft, Voyager 2, had launched a few weeks earlier on August 20, 1977.

At around 13 billion miles away, Voyager 1 has traveled the furthest distance from Earth for a human-created object.  Voyager 2 has a record of its own - the longest continuously operating spacecraft.