p33k4y t1_j2dfxy7 wrote
Reply to comment by Gnonthgol in eli5: back then, before astronouts goes to space, how do we know about thing like nonexistent of oxygen & zero gravity? by zetasstra
>Some almost died from the lack of oxygen and low temperatures
Some did perish, e.g., Joseph Croce-Spinelli and Théodore Sivel in 1875:
https://www.atlasobscura.com/articles/the-balloonists-of-pere-lachaise-cemetery
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