January 27

1967 – More than sixty nations sign the Outer Space Treaty banning nuclear weapons in space.
1967 - During a routine test on the launch pad, a spark caused a fire to start in the crew compartment of the command module. Gus Grissom, Ed White, and Roger Chaffee, were killed in this tragic incident. It was later determined that faulty wiring caused the spark, and the pure oxygen environment in the capsule was to blame for the rapid spreading of the blaze.