If you thought sending a message from space was weird, just wait - soon, we’ll be communicating with relativistic spacecraft! According to recent research, scientists have developed a method for sending and receiving messages from spacecraft travelling at close to the speed of light. This method uses the Doppler effect to shift the frequency of the signal, allowing messages to be sent and received even when the spacecraft is travelling at relativistic speeds. The implications of this breakthrough are huge - it could open up a whole new realm of interstellar exploration!

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source: Phys.org