Seeking entries for The Golden Record, an exhibition inspired by the images and sounds of “The Sounds of Earth,” the recording that is now traveling on the Voyager spacecraft far beyond our galaxy, bearing hundreds of sounds, including the Brandenburg Concerto, whales, footsteps, greetings in 55 languages, thunder, crickets, brainwaves, a heartbeat, and “Dark Was the Night, Cold Was the Ground” by Blind Willie Johnson.