Historical observation of solar prominences on Mount Wilson in the 1930s
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NASA. Observing solar prominences from the MONT WILSON observatory. Circa 1930.
Silver print. Caption on back "MONT WILSON OBSERVATORY, B15, Prominence 80,000 miles high, August 21, 1909, H(alpha) Hydrogen".19.2 x 24.4 cm with margins.
Automatically translated by DeepL. The original version is the only legally valid version. To see the original version, switch to the French language.
