Transmissions from Earth

Transmissions from Earth refer to signals—such as radio, television, and internet communications—that we send through space using powerful antennas. These signals travel outward at the speed of light, potentially reaching other planets, spacecraft, or distant civilizations. Conversely, signals from space, like those from stars or space probes, can be received here on Earth. Because of the vast distances involved, these transmissions can take years or even decades to arrive or return. They are essential for space exploration, communication, and in efforts to detect extraterrestrial intelligence.