What I love about the photograph is that it captures his total wonderment at having just fn walked on the fn moon.
He and Aldrin still have to get their spacecraft off the Lunar surface, rendezvous with the command module, fly back to Earth, and land the damn thing.
Today, some of the flags planted on the moon still stand upright. However, 40 years of intense UV radiation have bleached them all white. The plaque remains.