In what form does all radiant energy travel through space?

Radiant energy is the energy of electromagnetic waves. It is a form of energy that can travel through space. For example, we receive the heat from the sun, which is located very far from the earth via radiation. The sun's heat is not transmitted through any solid medium, but through a vacuum.

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Iwould you figure it out but you don't have a picture or in your question as to what the physical property you're looking for is