Apollo 15 astronaut Al Worden, who circled moon, dies at 88

Twenty-four human beings have traveled from Earth to the moon. Fewer than half of them remain.

Astronaut Al Worden, who flew to the moon in 1971 as a member of the Apollo 15 crew, has died. The retired astronaut was 88.

Worden circled the moon alone on that mission, while his two crewmates test-drove the first lunar rover. Read the rest