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Which is the coldest planet?

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Quick Answer

With temperatures averaging -350 degrees Fahrenheit and reaching as cold as -371 degrees Fahrenheit in some places, Uranus is the coldest planet in the solar system. The composition of Uranus is naturally icy, with about 80 percent of the planet formed from methane, ammonia and water-based ice.

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Full Answer

The reason that Uranus is so cold is because it is a long way from the sun. It doesn't receive very much warmth from the sun at all, and it takes Uranus 84 Earth years to make just one orbit around the sun.

Human life could not exist on Uranus. Along with the frigid cold temperatures, Uranus is a also very windy, with violent winds blowing with velocities of as much as 360 miles per hour.

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