"Twin Voyagers" is an homage to NASA's Voyager 1 and Voyager 2 spacecraft, and their journeys beyond the heliosphere and eventually beyond our solar system. "Twin Voyagers" is based on an article at The Guardian news site, Nov.4, 2019. There it was reported that both NASA Voyager spacecraft have escaped the solar system's outer boundary called the heliosphere. "The two Voyagers will outlast Earth,'" said Kurth. "They’re in their own orbits around the galaxy for 5 billion years or longer. And the probability of them running into anything is almost zero."