In a shabby brick hut in 1967, a young researcher spots a bizarre, pulsing signal: a cosmic whisper picked up a huge receiver she helped to build. Is it just mundane interference - or could it be alien life?

Hannah Fry shares a tale of one woman’s journey through the male-dominated halls of 1960s academia, to a groundbreaking discovery that transformed our understanding of the universe.

Producer: Ilan Goodman Sound Designer: Jon Nicholls Story Editor: John Yorke