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APOD: Earth’s changing distance to the Sun July 4, 2009

Posted by Sarah in pics.
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Today, the 4th of July, the Earth’s elliptical orbit takes our planet to its farthest point from the Sun (‘aphelion‘). This composite image demonstrates nicely how this causes the Sun to appear just a tad smaller in the sky compared with the perihelion size, at the closest approach.

Image credit: E.L. Cervigon