A broadcast that struck fear into an already anxious nation, Orson Welles' War of the Worlds radio broadcast was the most famous alien invasion that never happened.
Many Americans could not fathom that some people heard War of the Worlds and actually believed that Martians had landed in New Jersey.
In the early 1900s, Martians were a hot topic in American popular culture.
After the infamous 1938 radio broadcast of The War of the Worlds, thousands of listeners wrote letters. American Experience film producers used the letters as inspiration for dramatized on-camera interviews. Watch the outtakes.