Radiation
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Yes the above is correct. When something is hot it gives of Infrared radiation, part of the electromagnetic spectrum like light, but a part that our eyes can not see (we can however feel the warmth on our skin).
Infrared radiation is the only aspect of heat that can go through space or a vacuum because the absence of matter (stuff) in a vacuum means that convection and conduction are not possible.
Radiation is the thermal of energy by electromagnetic waves through the vacuum of space.
Convection
Sound cannot travel in a vacuum. Sound is mechanical energy, and it travels by the transfer of mechanical energy through the medium through which it is traveling. If there is nothing to transfer the mechanical energy, like there is nothing in a vacuum, sound cannot travel there.
A completely empty space is called a vacuum. A vacuum does not even have air. Sound cannot travel through a vacuum.
heat or light radiation can travel through a 100% vacuum
Energy from the sun travels through the vacuum of space by radiation.
Radiation is the thermal of energy by electromagnetic waves through the vacuum of space.
electromagnetic waves
Radiation is the transfer of energy through a vacuum.
Convection
Sound cannot travel in a vacuum. Sound is mechanical energy, and it travels by the transfer of mechanical energy through the medium through which it is traveling. If there is nothing to transfer the mechanical energy, like there is nothing in a vacuum, sound cannot travel there.
A completely empty space is called a vacuum. A vacuum does not even have air. Sound cannot travel through a vacuum.
heat or light radiation can travel through a 100% vacuum
The transfer of heat energy through empty space is called radiation.
Convection is the transfer of energy through space.
Due to the vacuum of space there is no convection or conduction. Energy is transported by photons from the Sun to Venus (radiation).
Some waves can transfer energy only through liquids and solids, but not through gases or vacuum. Some waves, like sound waves, can transfer energy through gases, liquids and solids but not through vacuum. And some waves, notably electromagnetic waves, can transfer energy through vacuum as well as matter.