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You are here: Home / Space / How Cold Is the Planet Neptune and Why Is Neptune About the Same Temperature As Uranus?

How Cold Is the Planet Neptune and Why Is Neptune About the Same Temperature As Uranus?

March 26, 2020 by Karen Hill

Neptune is over 1 billion miles (1.6 billion km) farther away from the Sun than Uranus, but the two planets are close in temperature: –365°F (-220°C) on Neptune; –355°F (-214°C) on Uranus.

This results from Neptune’s interior, which is not as solid as Uranus’s.

A partially fluid core will experience more movement than a solid core, and movement, friction, creates heat.

While Neptune is not hotter than Uranus, it is much warmer than expected, given its distance from the Sun.

Related Facts

  • What Is Uranus Made of and Why Does the Planet Uranus Have Such a Low Internal Temperature?
  • How Was Neptune Discovered and How Did Astronomers Determine That the Planet Neptune Existed Beyond Uranus?
  • How Cold Is the Planet Uranus and What Effects Does Uranus’s Cold Temperature Have On Its Atmosphere?
  • What Is the Seventh Planet From the Sun, How Big Is Uranus, and How Far Is the Planet Uranus From the Sun?
  • When Was Uranus Discovered, How Did the Planet Uranus Get Its Name, and What Does Uranus Mean In Greek?
  • What Color Is the Planet Neptune and Why Is Neptune’s Atmosphere Bright Blue?

Filed Under: Space

About Karen Hill

Karen Hill is a freelance writer, editor, and columnist. Born in New York, her work has appeared in the Examiner, Yahoo News, Buzzfeed, among others.

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