Image: Planet Elongation
Planet_Elongation.jpg (414 × 223 pixels, file size: 14 KB, MIME type: image/jpeg)
Description: Caption from source: "Because Mercury and Venus orbit the Sun within Earth's orbit, they stay close to the Sun in the sky as seen from Earth. At their greatest angular distance from the Sun they are said to be at elongation. Here the two planets are shown at eastern elongation; they set after the Sun and appear as evening stars."
Title: Planet Elongation
Credit: http://history.nasa.gov/SP-424/ch1.htm
Author: NASA
Usage Terms: Public domain
License: Public domain
Attribution Required?: No
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