Map of TV shows being broadcasted into space

In the movie Contact the first signs of alien life are a broadcast from the Vega star system. The first broadcast is then revealed to everyone's horror to be Hitler opening the 1936 Summer Olympic Games. The main characters quickly decide something on Vega is bouncing back the Hitler broadcast to show they can see the broadcasts and are not endorsing Hitler. That scene was probably the first time many realized television signals travel into deep space.

Strange Maps features a map (below) which maps out what signals are where in deep space. Even though the universe is incredibly vast, the map gives the sense that are little sector is empty of any other species that is in an epoch of equivalent technology.

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