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

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.

how cold is the planet neptune and why is neptune about the same temperature as uranus

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

About Karen Hill

Karen Hill is a freelance writer, editor, and columnist for Born in New York, she loves interesting random facts from all over the world.