He walked on the moon in 1972. This is his advice for the Artemis II astronauts.
If anyone can offer advice to the four NASA astronauts slated to launch Wednesday on a trip around the moon, it’s Harrison Schmitt. Schmitt, 90, left his bootprints on the lunar surface in 1972, as part of Apollo 17 — the final mission in the program, which was the last time humans traveled to the…