The twin Voyager spacecraft, which launched in 1977, are our ambassadors to the rest of the Milky Way, destined to continue orbiting the center of our galaxy for billions of years after they stop communicating with Earth. On Aug. 25, 2012, Voyager 1 became the first humanmade object to enter interstellar space, and Voyager 2 is expected to cross over in the next few years. At age 40, the Voyagers are the farthest and longestoperating spacecraft and still have plenty more to discover. This poster captures the spirit of exploration, the vastness of space and the wonder that has fueled this ambitious journey to the outer planets and beyond. Credit: NASAJPLCaltech