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Helio and You: Studying Eclipses Near and Far - NASA Science (.gov)NASA Science (.gov) · Fri, 07 Aug 2026 13:00:00 GMTIn 1868, a French astronomer studying a solar eclipse from India spotted a yellow spectral line at 587 nanometres that matched no element known on Earth, and the gas — named helium after the Greek word for the Sun — would not be isolated in a terrestrial l - ScienceBlog.comScienceBlog.com · Tue, 04 Aug 2026 21:20:53 GMT