Rebel Star | Colin Stuart

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In 1869, a great mystery was born. As astronomers observed a total solar eclipse, for the first time they saw the faint glow of the solar corona, the sun's outer atmosphere. Measurements of a previously unknown wavelength that made up this solar light sparked hot debate among scientists, but it was another sixty years before they discovered that this wavelength was in fact iron being burned at a staggering 3 million degrees Celsius. With the sun's surface only 6,000 degrees, this shouldn't be possible. What we now knew about the sun appeared to defy the laws of physics - and nature.But as well as being shrouded in intriguing mystery, the unpredictable nature of the sun's corona poses a serious threat to our life here on earth - the destructive potential of solar storms, caused by solar material travelling out into space at around 1 million miles an hour, is huge. Remaining beyond our reach until now, a new generation of ambitious solar missions are currently travelling closer to the sun than any previous spacecraft in history. As we enter this unprecedented era of heliophysics, there has never been a better time to get to grips with the workings of our home star.

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