Soviet cosmonaut Vladimir Komarov dies in Soyuz 1 when, during re-entry into Earth’s atmosphere after more than ten successful orbits, the capsule’s main parachute fails to deploy properly, and the backup chute becomes entangled in the first. The capsule’s descent is slowed, but it still hits the ground at about 90 mph, at which point it bursts into flames. Komarov is the first human to die during a space mission.