Apollo 1 astronauts, USA, c 1967.
© National Aeronautics & Space Administration / Science & Society
From left, Apollo 1 astronauts Gus Grissom, Ed White and Roger Chaffee pose in front of their Saturn 1 launch vehicle at Launch Complex 34 at the Kennedy Space Centre, Florida. On the morning of January 27, 1967, the crew was sitting above the launch pad for a pre-launch test when a fire broke out in their capsule. The investigation into the fatal accident led to major design changes, making the Apollo spacecraft safer for the coming journeys to the Moon.