What is the coldest coldest planet?

Answer 1

The coldest planet in the Solar system is Pluto.

The coldest is Neptune. Pluto isn't a planet anymore.

The second dude is right, Pluto is now a dwarf planet because it cant hit objects out of space cuz of his smallness.

Answer 2

Uranus is the coldest planet in our Solar System, closely followed by Neptune.

Why is this, when Neptune (of similar composition) is so much further from the sun? One possible explanation is that a massive impact altering the axial tilt of Uranus eons ago helped liberate core heat into space. Another explanation is that the equatorial regions of Uranus are more active, also helping to dispel internal heat.

The dwarf planet Eris should be colder still. Pluto is sometimes closer to the sun than Neptune, nevertheless it is colder than Neptune because it is so small and airless--it lacks the internal radiation that provides Neptune a small amount of additional warmth. But Eris, though slightly larger than Pluto, orbits substantially further out from the sun.

Answer 3

Uranus is the coldest planet in the solar system. Neptune is slightly warmer despite being farther from the sun because it generates its own heat.

Answer 4

• pluto