I have seen the reversal explained in this way, Just as friction between moving objects generates heat, so the motion of molecules in matter creates heat, the faster the molecules move the more heat they create. Indirectly, we might be able to claim that Earth receives heat from Sun, but not as students understand the statement. Radiant heat is a 19th century concept. Remember, Heat is the energy of the random motion of the particles in matter. Where there are no particles of matter, there can not be any heat.
Radiant heat is an obsolete name for infrared radiation, a kind of electromagnetic energy.
At the same time, heat in matter is being converted to electromagnetic energy, and radiated away. Which is why the ground cools at night. The idea that heat rises results from abbreviating the naive identification of hot air as heat, with the misconception that warm air rises. Earth rotates exactly once in 24 hours. A statement frequently found in science books is, Earth rotates once each day .