Original: 1967 & ndash ; Apollo program : Apollo 1 & ndash ; Astronauts Gus Grissom , Edward White and Roger Chaffee are killed in a fire during a test of their spacecraft at the Kennedy Space Center .
Simplified: 1967 -- Astronauts Gus Grissom , Edward White and Roger Chaffee are killed in a fire during a test of the Apollo 1 spacecraft at the Kennedy Space Center .