There are situations where radiation is emitted by a source, attenuated through some other matter, then absorbed by other matter, resulting in temperature increase. So, yeah energy can be transmitted through matter. read more
Yes, there are only three methods of heat transfer; conduction, convection and radiation. All heat transfers through space are by radiation. read more
Radiation is a method of heat transfer that does not rely upon any contact between the heat source and the heated object as is the case with conduction and convection. Heat can be transmitted through empty space by thermal radiation often called infrared radiation. read more