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question/idea about speed of light objects

`hýsøŕ
in Speculations

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so a photon goes at the speed of light, but does anything that goes at the speed of light have to be a photon? could you have some other object which has the property it goes at/faster than light, has no mass but isn't the usual EM field oscillations that make up light?

All massless particles travel at c; Not all massless particles are photons. There are also gluons and, potentially, gravitons as changes in gravity also propagate at c.

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