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... Hosted by Simplecast, an AdsWizz company. See https://pcm.adswizz.com
for information about our collection and use of personal data for
advertising.
