Monthly Archives: May 2014

How does the Sun shine? (Part 2 and a half: Spectroscopy)

Before continuing into the 20th century, it is required to stress the importance of spectroscopy as THE scientific tool which made it possible to advance knowledge on the source of the Sun’s energy by starting to give clues on the … Continue reading

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How does the Sun shine? (Part 2: Gravity and thermodynamics)

1850s: Gravity-based explanations. The sun could be fueled by meteors falling into it from outer space, however, it was realized that this proposal fell short because there simply were not enough meteors available to do the job, nor was there … Continue reading

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