4 ms·

The way I see it people got stuck in a mindset of universal background time that is pretty much what earth clocks run at. With any serious relativity effects on

The way I see it people got stuck in a mindset of universal background time that is pretty much what earth clocks run at. With any serious relativity effects only being locally compartmentalized next to extreme cosmic phenomena. Adding dark matter to this mindset makes it even worse because it homogenizes everything even further towards a Universal Standard Timeframe when 80% of all mass is finely dispersed as a background fog. Put the Real back in Relativity. It's by far a more satisfying solution than magic mystery matter. My pet theory is that black holes are also vastly misunderstood because they're always seen from the Universal Standard Timeframe, if we probe a black hole and their local space from strongly relativistic timeframe they'll start to make more sense, but I'll leave that to the daydreams of the reader.

User23 2y ago
GR says that you can pick any frame that you want. The Earth-centered, Earth-fixed coordinate system happens to be really convenient practically, for things like navigation satellites.
- deleted 2y ago
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- justlikereddit 2y ago
  Sure you can do that. But the context of what is going on in different frames will be mostly lost. Explain the history of earth seen from a probe hovering one inch above the event horizon of Sagittarius A*? From the perspective of the probe: "The solar system, home of mankind was a blink in the sky that lasted 1 second according to probe time. As was most other stars, as seen from here. Surely nothing important could ever happen in such a short timeframe. Fin." There's important nuances to what perspective one have. Something that seems to not just be missed but actively fought against in modernity.
- uoaei 2y ago
  In the context of GR, at cosmological scales, every frame is an inertial frame. That means fictitious forces will arise if you're not careful to account for that.

User23 2y ago

GR says that you can pick any frame that you want. The Earth-centered, Earth-fixed coordinate system happens to be really convenient practically, for things like navigation satellites.

deleted 2y ago
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justlikereddit 2y ago
Sure you can do that. But the context of what is going on in different frames will be mostly lost. Explain the history of earth seen from a probe hovering one inch above the event horizon of Sagittarius A*? From the perspective of the probe: "The solar system, home of mankind was a blink in the sky that lasted 1 second according to probe time. As was most other stars, as seen from here. Surely nothing important could ever happen in such a short timeframe. Fin." There's important nuances to what perspective one have. Something that seems to not just be missed but actively fought against in modernity.
uoaei 2y ago
In the context of GR, at cosmological scales, every frame is an inertial frame. That means fictitious forces will arise if you're not careful to account for that.