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| | The Sun's Magnetic Cycle |
 | | During the time when Gauss was studying the Earth's magnetic field, elsewhere in Germany a serious amateur astronomer named Heinrich Schwabe (Shwah-bay), a pharmacist by trade, was searching for a new unknown planet. |
 | | That planet, tentatively named "Vulcan," was expected to be inside the orbit of Mercury, so close to the Sun that its presence became evident only when it passed between us and the Sun, a dark spot crawling across the solar disk. |
 | | However, after a decade and more of diligent observations, Schwabe found something that had eluded all astronomers of the preceding two centuries--since sunspots were first reported by Galileo and Christopher Scheiner. |
| www.phy6.org /earthmag/sunspots.htm (600 words) |
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