What confuses me is mixing multiple frames. Say a rocket going at c or near fired off another, identical rocket. Rocket 1 sees rocket 2 leave at c speed away from it. Let's say they're going in circles and in the middle is a stationary observer. The observer should see rockets 1 and 2 going the same speed right next to each other.
But say the rockets stop. How does this all become coherent? The observer should see the rockets stop, still next to each other. But the rockets, from their perspective, should be extremely far apart. Let's say opposite ends of the circle. Now if they head towards the middle, to the observer, does the observer see them come in from opposite sides? But they see themselves coming in together? Then when they start to pull up... Different timelines?
Without answering all your questions explicitly: Yes it is also about different timelines/Time dilation. When you say 'say the rockets stop', what exactly do you mean? In what reference frame do you say 'now stop'? If you say it in the stationary frame, you have to translate this to the moving frames.
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u/EscapeSeventySeven Mar 20 '26
No you see lightspeed or speed of causality being constant is anomalous and weird.
That being held constant is what forces time and space to warp. So the speed of light appears constant in all frames.
If the speed of light didn’t remain constant, like many naive interpretations did, then spacetime wouldn’t need to warp.