When we think about teleportation, there’s always someone talking about how you should take into account the earth and the sun moving through space. Let’s step back a little (not so much) what if the galaxy we’re currently in is rotating really really fast around another, bigger, still unknown, spacial object?

  • Björn Tantau@swg-empire.de
    5·
    9 months ago

    Currently the closest thing to a universal reference point we have is the cosmic microwave background. Relative to that we move at about 370 km/s ± 60 km/s, depending on the time of the year and day.

  • gmtom@lemmy.world
    10·
    9 months ago

    Well the thing is the universe is so big that anything further than 14ish billion lightyears away from us basically doesn’t exist as any information from them woukd take longer to get to us thsn the universe has existed and due to cosmoc expansion, that linfkrmstion actuslly gets firther away from us over time, despite it traveling at the speed of light. And since the universe rotaing around a point would require a gravitstional onteraction that travels at the speed of light, we physically cannot be rotating around a point further away than that.

    And since the same is true for any point in space, there can’t really be any centre to the universe.

    The closest we could come to that is a point in the relative centre of the Virgo supercluster, which is the largest structure in “our” universe that are gravitational bound to us and won’t dissappear from our sight as the universe expands.

  • agent_flounder@lemmy.worldEnglish
    11·
    9 months ago

    I mean motion is all relative anyway, right? So would teleportation be like throwing a ball on a train? That is, the ball’s motion depends on the frame of reference. So maybe teleporting would work that way if it were actually possible.

    • CeeBee@lemmy.world
      51·
      9 months ago

      Now what about time travel?

      Technically, Marty McFly should have appeared in space far from anything instead of old man Peabody’s Pine farm.