On Christmas Eve 1968, American astronauts became the first humans to leave Earth’s orbit and the first to travel around the moon — and the timing couldn’t have been better. Their peaceful message was seen by a billion people, uniting a fractured world. https://cnn.it/2EKv4Qc | CNN

From MLK's assassination to the Apollo 8 mission, the events of 1968 changed the course of the nation. CNN's new series, "1968: The Year That Changed America" airs Sunday, May 27, at 9pm ET https://cnn.it/2KV840V | CNN