A politician who has just said something very dumb on an AM all-talk radio station suddenly remembers the astronomy class he had in college, and starts to worry that his words are now moving outward into space at the speed of light (and will embarrass him forever). Does he have a reason to worry?AYes, because all radio waves do travel at the speed of light and all of them escape from the EarthBNo, because radio waves travel much slower than the speed of light and will take a very long time to get anywhereCNo, because radio waves are all absorbed by the ozone layer in the Earth's atmosphereDNo, because AM radio waves are bounced back or scattered by the ionosphere and don't get into spaceEYes, because while all radio waves do not escape from the Earth, AM radio waves do

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