Why is Dr. Harrison schmitt famous for?

Dr. Harrison Schmitt is famous for being a NASA astronaut and the only scientist, specifically a geologist, to have walked on the Moon. He was a member of the Apollo 17 mission in December 1972, which was the last crewed mission to the Moon. Schmitt's scientific expertise allowed him to conduct extensive geological surveys and collect samples that contributed significantly to lunar science. After his NASA career, he also pursued a successful career in politics and academia.