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Fingerprint of the Sun: How Helium Was Discovered
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Helium is the only element that was first discovered in space before it was detected on Earth. This episode is about the discovery of helium.
·Heidelberg, Germany
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For AstroGeo we regularly research a whole story. Only if you support us financially, the podcast will remain free of charge. Thank you! After astronomers had started to get a more accurate picture of the sun, moon and stars by means of telescopes, in the 19th century they faced another revolution: spectroscopy. In doing so, the light of a celestial body is not directed directly into the eye, but through a spectroscope. The white sunlight, for e…
·Heidelberg, Germany
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