A 2018 report published by the US National Aeronautics and Space Administration (NASA) shows the lengths America’s premier space agency is willing to consider when proving the existence of intelligent alien life. Entitled NASA and The Search For Technosignatures, the 70-page document details all of the various ways space scientists considered intelligent extraterrestrial life might be located during NASA’s Technosignatures Workshop, hosted in Houston, Texas, September 26-28, 2018. Numerous novel methods for detecting traces of advanced alien technology are discussed in the report. Yet one section is particularly intriguing. Described as “interlopers,” NASA scientists discussed the potential for extraterrestrial probes...