Apparently, Carl Sagan was under the impression that astronauts were given cyanide pills, but NASA and actual astronauts have denied this, pointing out that poi

Apparently, Carl Sagan was under the impression that astronauts were given cyanide pills, but NASA and actual astronauts have denied this, pointing out that poison is unnecessary when you can just open the hatch and depressurize your spacecraft. https://en.wikipedia.org/wiki/Contact_(1997_American_film)#NASA https://en.wikipedia.org/wiki/Contact_(1997_American_film)#N...