Find the missing text [S** C***]
Background picture associated with the solution.Correct answers: 78
The first user who solved this task is Savanna Rose.
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Solar spectrumIn 1871, spectroscopic observations of an eclipse in India made by French astronomer Jules Janssen led him to propose that the corona, normally only visible during a solar eclipse, is a physical part of the Sun and is composed of both hot gases and cooler particles.Image: Illustrated London News, [60], 20 Jan 1872. |