Did aliens boogie into Earth’s airwaves in ‘77 with a funky cosmic beat? Sophie and Jess groove on the Wow! Signal—a 72-second mystery that left an astronomer shouting ‘Wow!’ Was it an extraterrestrial jam session, a freaky fluke, or something out of this world? Tune in to Episode 8 of History’s Little Mysteries and decode the grooviest riddle yet!