tdihc-2023-08-18-helium-discovered

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

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

From the desk of “Stuff You Missed in History Class,” “This Day in History Class” quickly recounts a tidbit from today’s events in history.

https://api.omny.fm/orgs/e73c998e-6e60-432f-8610-ae210140c5b1/clips/7eb53df1-9218-4fc7-b990-b06200454028/transcript