Mixed Signals: Alien Communication Across the Iron Curtain

In the shadow of the Cold War, whispers from the cosmos fueled an unlikely alliance between the US and USSR. The search for extraterrestrial intelligence (or SETI) emerged as a foundational field of radio astronomy characterized by an unusual level of international collaboration—but SETI’s use of signals intelligence technology also served military and governmental purposes.

In this captivating new history of the collaboration between American and Soviet radio astronomers as they sought to...