Thursday, February 5, 2009

Have you ever seen an Annular Solar Eclipse?

(image credit: Dennis Mammana)
"An annular eclipse occurs when the Sun and Moon are exactly in line, but the apparent size of the Moon is smaller than that of the Sun. Hence the Sun appears as a very bright ring, or annulus, surrounding the outline of the Moon."

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Reflections on the Reflecting Pool Controversy

Tourists in Washington DC this last week are wondering why the Reflecting Pool is being guarded like Fort Knox and why it's green and st...