At first, White House officials thought the idea of Space Force was just a lark. A former senior official told me that through most of last year Trump was generally interested in space.
Behind the scenes: He would ask random questions about rocket ships and marvel to hear about satellites and the junk floating around in space. His questions were unfocused, like a student trying to learn about a new subject. "It was just one of those subjects that piqued his interest," the source said.