This is a geat opportunity to combine history and astronomy. Just be careful how you view the sun (indirectly or through welding goggles.)James Cook and the Transit of Venus. The best reason to watch the 2004 transit of Venus across the Sun is history. [Science @ NASA]
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Today's blog is brought to you by the number phi.
Euclid: AB/AC=AC/CB If CB =1 and AC=x, then x^2 - x - 1 = 0.
The ratio of a pentagon's diagonal to its side is phi.
