| ▲ | avmich 2 hours ago | |
Apollo I disaster suggests pure oxygen atmospheres are to be avoided. | ||
| ▲ | sam1714 an hour ago | parent [-] | |
And the 1961 fire that killed cosmonaut Valentin Bondarenko in an altitude chamber. The Soviets covered it up until the 1980's, so NASA made the same mistake. | ||