Helium is discovered during a solar eclipse - August 18th, 1868

This Day in History Class - En podkast av iHeartPodcasts and HowStuffWorks

Prøv Podimo gratis i hele 90! dager!

I Podimo finner du eksklusive podkaster og bestselgende lydbøker tilpasset dine ører

On this day in 1868, French astronomer Pierre Janssen discovered an unknown element while observing a solar eclipse.