• Kethal@lemmy.world
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    1 year ago

    I see what you mean. That is just as arbitrary as using the Earth’s size or any other reference. There’s nothing special about a year.

      • accidental@lemmy.sdf.org
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        1 year ago

        it’s a hard thing for me to wrap my head around, but it’s cool when you think about it: there’s actually no possible shared reference; even with atomic clocks, based solely on the bouncing of cesium atoms ticking away, the distance travelled is dependent on acceleration in your reference frame.

        relativity really is!