How is heat transferred through radiation? A. Heat is transferred by energy waves moving through space.
B. Heat is transferred by the movement of a liquid or gas.
C. Heat is transferred by one molecule touching another.
D. Heat is transferred through kinetic energy exchange.

Explanation: According to research :

Radiation is the transfer of heat energy through space by electromagnetic radiation. Most of the electromagnetic radiation that comes to the earth from the sun is invisible

no, the red giant is the hottest with 2.00.000.000 degrees celsius. while the white dwarf only 25,000 degrees celsius.