Happy Flag Day! Did you know there are six American flags located on the moon? Apollo crews 11, 12, 14, 15, 16, and 17 planted the flags on the moon. Here Astronaut John W. Young, commander of the Apollo 16 lunar landing mission, leaps from the lunar surface as he salutes the United States flag at the Descartes landing site during the first Apollo 16 extravehicular activity. Astronaut Charles M. Duke Jr., lunar module pilot, took this picture. Credit: NASA #FlagDay #NASA #space #moon #Apollo16