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4 Nov 2004
Physicists in New Zealand observed a record-breaking solar flair.
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5 May 2000
A conjunction of Sun, Mercury, Venus, Mars, Jupiter, Saturn, and the Moon occurred.
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16 Aug 1989
A solar flare from the sun created a geomagnetic storm, which caused Toronto's stock market to halt.
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7 Nov 1631
Using Johannes Kepler's predictions, French scientist Pierre Gassendi became the first person to witness Mercury's transit between the Earth and the Sun.
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9 Mar 1611
Dutch astronomer Johannes Fabricius discovered sunspots.
