 Zell-Ravenheart's wife, Morning Glory coined the term polyamory in 1990, another movement that includes Heinlein concepts among its roots.Heinlein was influential in making space exploration seem to the public more like a practical possibility.His stories in publications such as "The Saturday Evening Post" took a matter-of-fact approach to their outer-space setting, rather than the "gee whiz" tone that had previously been common.