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Neptune/Earth Comparison ... Surface Pressure: >>1000 bars Temperature at 1 bar: 72 K (-201 C) Temperature at 0.1 bar: 55 K (-218 C) Density at 1 bar: 0.45 kg/m3 Wind speeds: 0-200 m/s Scale height: 19.1 - 20.3 km Mean molecular weight: 2.53 - 2.69 g/mole Atmospheric composition (by volume, uncertainty in parentheses)
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nssdc.gsfc.nasa.gov/planetary/factsheet/neptunefact.htm...
nssdc.gsfc.nasa.gov/planetary/factsheet/neptunefact.html
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The average temperature of Neptune is 73 K (-200 Celsius). But one strange anomaly is the planet's south pole, which is 10 degrees warmer than the rest of planet. This "hot spot" occurs because Neptune's south pole is current exposed to the Sun.
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www.universetoday.com/guide-to-space/neptune/temperatur...
www.universetoday.com/guide-to-space/neptune/temperature-of-neptune/
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Ecology Question: What Is The Temperature On Neptune? The temperature on Neptune is -214° C (-353° F). Scientists believe that Neptune must have some internal source of heat and its atmosphere consists ... The temperature on Neptune is -214° C (-353° F). Scientists believe that Neptune must have some internal source of...
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www.blurtit.com/q228690.html
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The temperature difference between Neptune's strong internal heat source and its frigid cloud tops (-162° Celcius or -260° Fahrenheit) might trigger instabilities in the atmosphere that drive these large-scale weather changes.
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www.solarviews.com/eng/neptune.htm
www.solarviews.com/eng/neptune.htm
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Explore Neptune ... Neptune is the eighth ... Temperature Range...
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www.kidscosmos.org/kid-stuff/neptune-facts.html
www.kidscosmos.org/kid-stuff/neptune-facts.html
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Planet Neptune question: What is the temperature of Neptune? About -373° F or -225° C. The mean atmospheric temperature on Neptune is as low as -218°C at the cloud tops and about 72° K or -200° C ... Is neptune cold? What temperature is neptune? What is neptune's temperature? What is temperature on neptune?
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wiki.answers.com/Q/What_is_the_tem_on_neptune
wiki.answers.com/Q/What_is_the_tem_on_neptune
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Much of what we know about Neptune's atmosphere is from the Voyager II flyby in 1989. Like Uranus, Neptune has a dynamic atmosphere with a shroud of cold clouds. The average cloud temperature ranges from about -240 degrees to -330 degrees F...
http://www.answerbag.com/q_view/22038
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Overview with data, text, images, link ... This indicates that Neptune's atmosphere changes rapidly, perhaps due to slight changes in the temperature differences between the tops and bottoms of the clouds.
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www.nineplanets.org/neptune.html
www.nineplanets.org/neptune.html
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Although correlations between Neptune's brightness and Earth's temperature anomaly—and between Neptune and two models of solar variability—are visually compelling, at this time they are not statistically significant due to the limited degrees of freedom of the various time series.
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www.agu.org/pubs/crossref/2007/2006GL028764.shtml
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