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18:07
15 Sekunden vorwärts
15 Sekunden vorwärts

Astronomer Jules Janssen was desperate to escape the siege of Paris in 1870 and observe an eclipse in Africa—work that he hoped would confirm his discovery of a brand new element in the Sun, helium. So he devised a plan to escape the city in a hot-air balloon, despite promises by the German army to shoot him as a spy if he dared try...



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Weitere Episoden von „The Disappearing Spoon: a science history podcast with Sam Kean“