When SpaceX's record-breaking Falcon Heavy rocket made its first test launch in early February , the craft didn't just hurl Elon Musk's shiny red roadster and spacesuit-clad mannequin to space. It had another, smaller payload, which at first glance seems much less impressive: a 1-inch-wide (2.5 centimeters) quartz disc with Isaac Asimov's "Foundation" trilogy encoded in laser-etched gratings . From a report: The famous science fiction series is only the beginning of the discs' planned contents. At a time when traditional hard drives are just breaking into the terabyte range, the quartz medium can hold up to 360 terabytes per disc. It also boasts a life span of 14 billion years. That's longer than the current age of the universe. This disc was symbolic; future devices will contain much more, and more useful, information. But the technology speaks to grander issues that humanity is now pondering: becoming a multiplanetary civilization, storing information for thousands or millions of years, and contacting and communicating with other intelligences (alien and Earthling). So how should we record our knowledge and experiences for posterity? How should we ensure that this information is understandable to civilizations that may be quite different from our own? And, most importantly, what should we say? Humans have faced challenges like these before. Ancient civilizations built monuments like the pyramids and left artifacts and writing, sometimes deliberately. Later researchers have used this material to try to piece together ancient worldviews. However, in the modern era, we've set our sights much further: from centuries to millennia, from one planet to interstellar space, and from one species to many.
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