Squashed Reddened Sun with Transit of Venus

Transit of Venus

Refraction in the Earth's atmosphere squeezes the Sun into an oval shape (the lower edge refracted upward more than the upper edge). Stripes across the Sun reveal atmospheric layers. The thickening of the air toward the horizon causes a dramatic gradation in color (as the atmosphere strongly abosorbs blue light). Down and to the right, Venus transits the Sun on June 8, 2004.

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