On the other hand, the cosmic expanse is a challenge. It is the "Great Filter" that humanity must pass through to ensure its long-term survival. The expanse of space is no longer just a view; it is a destination. The rocket industry, the return to the Moon, and the dreams of Mars colonization are all driven
Perhaps the most recognizable use of the keyword today is , the acclaimed science fiction series based on the novels by James S.A. Corey (the pen name for Daniel Abraham and Ty Franck). The World-Building of a Future Solar System expanse