Speaking Beyond Earth: Perspectives on Messaging Across Deep Space and Cosmic Time

Since the dawn of the Space Age, small cohorts of humanity have broadcast signals towards other stars, fabricated "space-time capsules" to "speak for Earth" aboard interstellar probes, deposited collections of "space oddities" on other astronomical bodies, and permanently incised the memory of our species across the deep-time legacy of the Sol System. Many of these purposeful "messages" are the consequence of age-old behaviors, traditions, and material practices using modern aerospace tech...