What is the main mechanism of heat transfer in a vacuum?

What is the main mechanism of heat transfer in a vacuum?

Step 1: Understand that heat transfer is how heat moves from one place to another.
Step 2: Know that there are three main ways heat can transfer: conduction, convection, and radiation.
Step 3: Realize that conduction requires particles to touch each other to transfer heat.
Step 4: Understand that convection needs a fluid (like air or water) to move heat around.
Step 5: Recognize that in a vacuum, there are no particles or fluids present.
Step 6: Conclude that the only way heat can transfer in a vacuum is through radiation.
Step 7: Remember that radiation is the transfer of heat in the form of electromagnetic waves, like light.

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