Ever since the Second World War, television signals (as well as FM radio and radar) have served as Homo sapiens' emissaries into… — Seth Shostak Copy Share Image
“Our television signals leave this planet and go out into space...the signals spread out from the earth in spherical waves, a little… — Carl Sagan Copy Share Image
Our television transmitters leak out from the Earth. And actually, there's a sphere surrounding the Earth from the earliest television signals, maybe… — Jill Tarter Copy Share Image
