Are radio waves faster than light?
Actually, radio waves travel very quickly through space. Radio waves are a kind of electromagnetic radiation, and thus they move at the speed of light. The speed of light is a little less than 300,000 km per second. At that speed, a beam of light could go around the Earth at the equator more then 7 times in a second.
How long does it take a radio wave to travel one light year?
In other words, you can transmit sound as a radio wave (and this would take about a year to cover 1 light year; the speed of light through, say, air, is slightly lower than the speed of light in a vacuum, thus it would take slightly longer than 1 year),
Why do radio waves travel at the speed of light?
Radio waves travel at the speed of light because they are a kind of light. There is no special reason for them to travel at the speed of sound.
Do radio waves travel forever?
The earliest radio waves emitted from earth are currently about 200 light years away. However as mentioned before they will keep going forever getting harder and harder to detect as time passes. They will travel forever radiating from the Earth at the speed of light.