His face is obscured by the hat in this photo, but readers will undoubtedly know the name. This is ill-fated Apollo 13's Commander James A. Lovell, Jr. (of Tom Hanks, "Houston, we have a problem," fame), in December 1969, kneeling in the dirt to study the soil.
When (Part of) Apollo 13 Reached the Moon
Just a few months after this picture was taken, on April 11, 1970, Lovell and his crew would embark upon NASA's unlucky mission number 13. Catastrophic equipment problems scrubbed the moon landing and nearly cost the crew members their lives. But ingenuity, sheer nerve, and incredible flight skills got them all home safely.