"Doesn't yet have a satisfactory explanation -> Must be aliens" has a long history, long enough that the rest of us are entitled to draw the inductive conclusio

"Doesn't yet have a satisfactory explanation -> Must be aliens" has a long history, long enough that the rest of us are entitled to draw the inductive conclusion that it's a weak argument very unlikely to be true. It is inductive, not deductive, so this bothers people laboring under the misapprehension that science deals with deductive reasoning. But science is ultimately inductive; we happen to sometimes get to deduce things within its framework but it all lives in an inductive framework.