Outer Space
How can radio waves continue to travel for ever in outer space?
How can radio waves continue to travel for ever in outer space?
On earth the radio waves from your favorite radio or TV station will only go 100 miles or so at the very most, but NASA and Astronomers say that they will travel almost for ever, or at least Billions and Trillions of miles with out stopping.
How is that possible?
Voyager 1 is so far from Earth in 1998 that it takes 9 hours 36 minutes for a radio signal traveling at the speed of light to reach Earth. Voyager’s signal, produced by a 20 watt radio transmitter, is so faint that the amount of power reaching NASA’s antennas is 20 billion times smaller than the power of a digital watch battery. Think that they will eventual fade into the noise of background radiation. We don’t know if our signals can leave the Sun’s magnetic heiloshpere
Lady Gaga – Poker Face – Parody (“Outer Space”)
Tags: astronomy, nasa, outer space, outer space astronauts, outer space crafts, outer space pictures, outer space treaty, science, space, technology
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