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What is the average temperature on Neptune?

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Quick Answer

Neptune has an average temperature of -373 degrees Fahrenheit, while the clouds that make up the planet's atmosphere range between -240 and -330 degrees Fahrenheit. Neptune is an ice giant that is primarily made up of a scalding-hot, dense mixture of water, methane and ammonia that likely sits on top of a solid, Earth-sized core.

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Full Answer

The clouds that make up Neptune's atmosphere are made up of methane, hydrogen and helium. The planet is cold and dark and is regularly subjected to extreme wind speeds and massive twisting storms that are constantly traversing its surface. Neptune is the eighth-furthest planet from the sun, at about 2.8 billion miles away.

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