Question

which type of heat transfer can occur through empty space? convection conduction radiation

Explanation:

Heat transfer by convection requires a fluid (liquid or gas) medium as it involves the movement of the fluid itself. Heat transfer by conduction requires a material medium (solid, liquid, or gas) as it involves the transfer of heat through direct molecular collisions. However, radiation is the transfer of heat in the form of electromagnetic waves. Electromagnetic waves (such as infrared waves which are responsible for heat transfer in radiation) can travel through a vacuum (empty space). For example, the heat from the Sun reaches the Earth through the vacuum of space via radiation.

Answer:

Radiation