The reason the temperature on the dark side of Mercury is warmer than originally expected is that:
A)Mercury's large iron core conducts heat through the planet.
B)Mercury does not rotate synchronously with its orbital period.
C)several very active volcanoes on Mercury, produced by tidal stresses from the Sun, produce excess heat.
D)winds in Mercury's tenuous atmosphere carry heat from the daytime side to the night side.

Question

Quizplus · Accepted Answer

Mercury does not rotate synchronously with its orbital period, allowing the dark side to be heated by residual heat from the daytime side.

The Reason the Temperature on the Dark Side of Mercury