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Find number abc

If 5ac0c + b42b0 = 86abc find number abc. Multiple solutions may exist.

Correct answers: 0

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Solar spectrum

In 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.

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