Obituary: John Young

Astronaut John Young (b.1930) died on January 5. Young flew the first Gemini mission with Gus Grissom, flew on Apollo 10, landed on the moon during Apollo 16, and later flew the inaugural flight of the space shuttle Columbia. He is the only man to fly four different classes of spacecraft. He holds the record for astronaut with the longest active service with NASA: 42 years. With Young’s death, only five moonwalkers survive.