What are we comparing the speeds of far away objects to in order to come up with a speed? Is there a point at which we reach the single thing all motion is compared to? Is that thing light?
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When we measure the speed of far away objects, it’s in relation to ourselves.
The speed of light is constant, regardless of how fast you’re moving relative to some other object. If I was moving at half the speed of light relative to you, and shined a light at you, both of us would still see the light moving at C, but its color would change.
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