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The world has been broadcasting TV signals since the 1920s. That has given the earliest signals about 80 years to travel away from earth, so that means they have travelled up to 80 light years. That is about 500,000,000,000,000 miles (give or take a few million miles).

That radius is enough to encompass up to 100 stars so the signals will have passed quite a few planets so far. By the time the signals reach these planets, the signals are probably far too weak to be detected above the radio noise of the universe so it is unlikely that any other life forms are watching our television programs from decades ago

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15y ago

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