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Winds Faster Than Sound on Neptune!!

30 Jun 2011, 20:41 UTC
Winds Faster Than Sound on Neptune!!
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In this image, the colors and contrasts were modified to emphasize the planet's atmospheric features. The winds in Neptune's atmosphere can reach the speed of sound (1,236 kil/hour or 768 mph) or more! Neptune's Great Dark Spot stands out as the most prominent feature on the left. Several features, including the fainter Dark Spot 2 and the South Polar Feature are locked to the planet's rotation. University of Arizona planetary scientist Erich Karkoschka was able to determine the various wind speeds and planet's precise rotation from analyzing images of Neptune from the Hubble Space Telescope archives totaling over 500 images. (Credit: Science Daily June 29.2011)

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