For the first time in history, the human species has the technology to destroy itself. But having developed that power, humans are also able to leave Earth and voyage into the vastness of space. After millions of years of evolution, we’ve arrived at the point where we can settle other worlds and begin the process of becoming multi-planetary. How did we get here? What does the future hold for us? Beyond the Known examines the major periods of discovery and rediscovery, from Classical Times, when Phoenicians, Persians and Greeks ventured forth; to The Age of European Exploration, which saw colonies sprout on nearly every continent; to The Era of Scientific Inquiry, when researchers developed brand new tools for mapping and travelling farther; to Our Spacefaring Future, which unveils plans currently underway for settling other planets and, eventually, travelling to the stars. “An encompassing account…Exulting in the curiosity and audacity that have propelled past exploration, Rader will excite readers about the future.” - Booklist