Why do Jupiter and Saturn radiate more energy than they receive from the sun?
A) Magnetic and electric fields heat the planet.
B) Fusion reactions inside the planet provide an additional heat source.
C) The planets are still radiating heat from when they first formed.
D) Friction between the planet and its moons heat the planet.

Question

Quizplus · Accepted Answer

Jupiter and Saturn radiate more energy than they receive from the sun because they are still releasing heat from their initial formation. This leftover heat is due to the gravitational contraction and differentiation that occurred when the planets formed.

Why Do Jupiter and Saturn Radiate More Energy Than They