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A comment on Compare Webb's Images to Hubble. Parent comment

Re:Compare Webb's Images to Hubble by 9991 on Wednesday July 13, 2022 @06:22AM (#32080807)
The objects aren’t really moving in that sense. The expansion of space over time is what stretches the light.
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Re:Compare Webb's Images to Hubble by jhoechtl on Wednesday July 13, 2022 @12:02PM (#32084569)
Without a fixed point of reference, what is the difference?
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Re:Compare Webb's Images to Hubble by 9991 on Wednesday July 13, 2022 @12:43PM (#32085206)
The difference is the expansion of space is accelerating over time. And certain wavelengths of light will be blocked by gas in the intervening space, and which light is blocked changes over time based on how red-shifted it is. Special Relativity isn't enough to explain this.
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