What was the name of the the first episode of Doctor Who to air in 1963?

The first episode of Doctor Who to air in 1963 was titled "An Unearthly Child." This episode introduced viewers to the mysterious time-traveling Doctor and his grandchild Susan Foreman, who were shown living in a junkyard. The episode captured the attention of audiences by presenting an ordinary British schoolteachers, Barbara Wright and Ian Chesterton, who stumble upon Susan's unusual abilities and her connection to the Doctor. The episode eventually leads to the four characters getting transported to the prehistoric era, setting the stage for the thrilling adventures that would follow in the long-running series.