The Voyager 1 space probe, still going almost 47 years after launch, is now some 15 billion miles away, and is humanity’s “most distant emissary.” Eventually, we’ll lose contact with it, but it will continue to carry humanity out into the universe. Its design includes an audio-visual disk containing Mozart, Bach, Beethoven, the sounds of babies crying, messages recorded in 55 languages, and much else, and Voyager testifies to the spiritual nature of human beings.