[Physics] How far can radio waves travel in vacuum? and light waves

photonsradiospacevisible-lightwaves

Radio wave and light wave are the same thing. They all are electromagnetic radiation, the only difference between them is frequency.
My question :
1, is there any photon-like thing for radio wave?
2, how far can they travel in vacuum space?

Thanks

Best Answer

Radio waves are like other frequency E&M radiation in that they can travel infinitely far in a vacuum at the speed c. c = 2.998x10^8 m/sec. Photons can have the frequency associated with the radio frequency.

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