APOD: Earth's changing distance to the Sun July 4, 2009
Posted by sarah in: pics , trackback
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
Comments»
[...] This post was Twitted by erlesen [...]