Staying Alive in Space From The First US Spacewalk June 3, 1965 to The Last Walks on the Moon December 14, 1972 5 First US Spacewalk June 3, 1965 Ed White was the first American to do a spacewalk. He spent 23 minutes floating in space. First US Spacewalk—Gemini IV Umbilical Ed White using the umbilical Last Man on the Moon December 14, 1972 Eugene Cernan was the last person to walk on the Moon. Before he left, he spent a total of 74 hours, 59 minutes, and 40 seconds there from December 11 to December 14, 1972. Last Walk on the Moon—Apollo 17 Cutaway model of the Portable Life Support System and Oxygen Purge System Gene Cernan on the Moon