I’m asking this because there is a scifi book I’m reading, and in the book there’s a scene where someone is communicating with a person in a spacecraft moving at lightspeed. I know their ability to communicate would probably not be possible, but let’s just put that aside for a second. Hypothetically, if you could communicate with someone moving lightspeed, would the time dilation make it so that they would appear to be moving and speaking very slowly relative to you?

  • CapuccinoCoretto@lemmy.worldEnglish
    2·
    3 days ago

    I remember in the game series Mass Effect they spoke of being able to break the EM communication barrier problems. They used a quantum entangled pair. Wiggle one, and the other instantaneously adopts the same position anywhere in the universe.

    FTL travel needs FTL coms and radio ain’t that. Star Trek handwavium called it subspace. Both of science fiction, but hey, isn’t that what all this is about.