The 3rd coldest planet is Neptune, with average temperatures around -214°C (-353°F), after Uranus (coldest) and Saturn (2nd coldest).
Coldest Planets Ranking:
- Uranus: -224°C (-371°F) - coldest despite not being farthest
- Saturn: -178°C (-288°F)
- Neptune: -214°C (-353°F)
- Jupiter: -145°C (-234°F)
Why Neptune is 3rd Coldest:
- Despite being farthest planet from the Sun
- Has internal heat source (warmer than Uranus)
- Uranus lacks significant internal heating
Interesting Fact:
- Neptune is farther from the Sun than Uranus
- But Uranus is colder due to unique heat dynamics
Importants Points:
- 3rd coldest: Neptune at -214°C
- Coldest: Uranus (not Neptune)
- Distance ≠ coldest: Internal heat matters